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639 Best Open Source Projects Built by Experts

Last updated: Published November 2, 2026

While browsing X, I saw a tweet from Andrej Karpathy about a new site he created called HackerTube, which recommends the best videos shared on Hacker News. And this isn't his first project. He has built several other really helpful projects in the past.

The best part is that there are hundreds of open source projects like this that can be very useful.

So we have created this quick library of 639 open source projects built by top experts. Use the categories below to jump to a section, or click any link to open the original project.

639 projects

Names highlighted in yellow are our top picks.

LLMs and model runtimes

  • Transformers, Site - Hugging Face / Model library / PyTorch
  • TensorRT-LLM, Site - NVIDIA / LLM inference / GPU
  • llama.cpp, Site - Georgi Gerganov / Run LLMs locally / C++ / GGUF
  • Candle - Hugging Face / ML framework / Rust
  • MLX, Site - Apple machine learning research / Apple silicon / Array framework
  • MLC LLM, Site - MLC AI (Tianqi Chen et al.) / LLM compiler / Run on phones
  • ONNX Runtime, Site - Microsoft / Inference engine / Cross-platform
  • gpt-oss - OpenAI / Open-weight model / Reference code
  • Diffusers, Docs - Hugging Face / Diffusion models / Image generation
  • PEFT, Docs - Hugging Face / Fine-tuning / LoRA
  • Ollama, Site - Ollama / Run LLMs locally / CLI / Go
  • vLLM, Site - vLLM project (UC Berkeley Sky Lab) / LLM serving / PagedAttention
  • SGLang, Site - SGLang team (LMSYS) / LLM serving / Fast inference
  • Dynamo, Docs - NVIDIA / Distributed inference / Datacenter
  • llamafile, Docs - Justine Tunney (Mozilla) / Single-file LLMs / Portable
  • KoboldCpp, Site - LostRuins (Concedo) / Run LLMs locally / Story writing
  • TextGen - oobabooga / Run LLMs locally / Desktop app / Web UI
  • LocalAI, Site - Ettore Di Giacinto / OpenAI-compatible API / Self-hosted
  • exo - exo labs / Run LLMs across devices / Cluster
  • ExLlamaV2 - turboderp / Quantized inference / GPU
  • LMDeploy, Docs - Shanghai AI Lab (InternLM) / LLM serving / Quantization
  • Xinference, Docs - Xorbits / Model serving / OpenAI-compatible API
  • OpenVINO, Docs - Intel / Inference toolkit / CPU
  • Apache TVM, Site - Apache (Tianqi Chen et al.) / ML compiler / Deployment
  • BitNet - Microsoft Research / 1-bit LLMs / CPU inference
  • Qwen3 - Alibaba Qwen team / Open-weight model / Multilingual
  • Gemma, Docs - Google DeepMind / Open-weight model / JAX
  • Unsloth, Docs - Daniel Han and Michael Han / Fine-tuning / Low memory
  • Axolotl, Docs - Axolotl AI (Wing Lian) / Fine-tuning / Config driven
  • LLaMA-Factory, Docs - Yaowei Zheng (hiyouga) / Fine-tuning / Web UI
  • torchtune, Site - PyTorch team / Fine-tuning / PyTorch
  • lm-evaluation-harness, Site - EleutherAI / LLM evaluation / Benchmarks
  • faster-whisper - SYSTRAN / Speech to text / Fast inference
  • sherpa-onnx, Site - k2-fsa (Next-gen Kaldi) / Speech / Offline / Embedded
  • Piper - Michael Hansen (Open Home Foundation) / Text to speech / Offline
  • Moshi - Kyutai / Voice AI / Real-time speech
  • whisper.cpp - Georgi Gerganov / Speech to text / C++
  • gpt-fast - Horace He (PyTorch team) / Fast inference / PyTorch
  • TRL, Docs - Hugging Face / RLHF / Fine-tuning
  • Tokenizers, Docs - Hugging Face / Tokenizer / Rust
  • MLX LM - Apple machine learning research / Run LLMs on Mac / Fine-tuning
  • WebLLM, Site - MLC AI / LLMs in the browser / WebGPU
  • DeepSpeed, Site - Microsoft / Distributed training / Optimization
  • Whisper - OpenAI (Alec Radford et al.) / Speech to text / Model
  • Accelerate, Docs - Hugging Face / Distributed training / PyTorch
  • Megatron-LM, Docs - NVIDIA / Large-scale training / GPU
  • ggml - Georgi Gerganov / Tensor library / C
  • LeRobot, Docs - Hugging Face / Robotics / Imitation learning

AI research code and models

  • rustbpe - Andrej Karpathy / Tokenizer training / Rust / BPE
  • nanochat - Andrej Karpathy / ChatGPT-style app / Full LLM pipeline / Training
  • Segment Anything - Meta AI (FAIR) / Image segmentation / Model
  • x-transformers - Phil Wang (lucidrains) / Transformer variants / PyTorch
  • llm.c - Andrej Karpathy / LLM training / C / CUDA
  • minbpe - Andrej Karpathy / Tokenizer / BPE / Education
  • LLMs-from-scratch - Sebastian Raschka / Book code / GPT / PyTorch
  • llama2.c - Andrej Karpathy / Llama inference / C
  • SAM 2 - Meta AI (FAIR) / Video segmentation / Model
  • nanoGPT - Andrej Karpathy / GPT training / PyTorch / Minimal code
  • makemore - Andrej Karpathy / Character models / Education
  • FlashAttention - Tri Dao / Attention kernels / CUDA
  • Mamba - Albert Gu and Tri Dao / State space models / Sequence modeling
  • vit-pytorch - Phil Wang (lucidrains) / Vision transformer / PyTorch
  • modded-nanogpt - Keller Jordan / GPT-2 speedrun / Training tricks
  • QLoRA, Paper - Tim Dettmers and Artidoro Pagnoni / Fine-tuning / Quantization
  • GPT-2 - OpenAI (Alec Radford et al.) / Language model / Historic / Archived
  • Darknet, Site - Joseph Redmon / YOLO / Neural networks / C
  • pytorch-CycleGAN-and-pix2pix - Jun-Yan Zhu / Image translation / GANs
  • ControlNet - Lvmin Zhang / Diffusion control / Image generation
  • DALL·E Mini - Boris Dayma / Text to image / JAX
  • AlphaFold - Google DeepMind (John Jumper et al.) / Protein structure / Biology
  • lecun1989-repro - Andrej Karpathy / Paper reproduction / PyTorch
  • deep-vector-quantization - Andrej Karpathy / VQ-VAE / PyTorch
  • V-JEPA 2 - Meta AI (FAIR) / Video world model / Self-supervised
  • minGPT - Andrej Karpathy / GPT / PyTorch / Education
  • micrograd - Andrej Karpathy / Autograd engine / Python / Education
  • reasoning-from-scratch - Sebastian Raschka / Book code / Reasoning models
  • NeuralTalk2 - Andrej Karpathy / Image captioning / Torch / No license
  • denoising-diffusion-pytorch - Phil Wang (lucidrains) / Diffusion models / PyTorch
  • Detectron2, Docs - Meta AI (FAIR) / Object detection / PyTorch
  • char-rnn - Andrej Karpathy / RNN / Torch / Text generation / No license
  • ConvNetJS - Andrej Karpathy / Neural networks / JavaScript / Browser

AI agents and apps

Machine learning frameworks

  • TensorFlow, Site - Google / Deep learning / Production
  • Datasets, Docs - Hugging Face / Datasets / Data loading
  • JAX, Docs - Google / Autodiff / XLA / Python
  • PyTorch, Site - Meta AI (Soumith Chintala et al.) / Deep learning / Python
  • Keras, Site - François Chollet / Deep learning API / Multi-backend
  • scikit-learn, Site - David Cournapeau and INRIA team / Classic ML / Python
  • PyTorch Lightning, Site - William Falcon / Training loops / PyTorch
  • XGBoost, Docs - Tianqi Chen (DMLC) / Gradient boosting / Tabular data
  • LightGBM, Docs - Microsoft / Gradient boosting / Fast training
  • CatBoost, Site - Yandex / Gradient boosting / Categorical data
  • Ray, Site - Anyscale (UC Berkeley RISELab) / Distributed computing / ML scaling
  • NumPy, Site - Travis Oliphant and community / Arrays / Scientific computing
  • SciPy, Site - SciPy community / Scientific computing / Python
  • OpenCV - OpenCV (Intel origins) / Computer vision / C++
  • Ultralytics YOLO, Site - Ultralytics (Glenn Jocher) / Object detection / Real time
  • Optuna, Site - Preferred Networks / Hyperparameter tuning / Python
  • MLflow, Site - Databricks / Experiment tracking / MLOps
  • Triton, Site - Philippe Tillet (OpenAI) / GPU kernels / Python
  • torchvision, Site - PyTorch team / Computer vision / Datasets
  • MuJoCo, Site - Emo Todorov (now Google DeepMind) / Physics simulation / Robotics
  • Gymnasium, Site - Farama Foundation / Reinforcement learning / Environments
  • Stable-Baselines3, Docs - DLR (Antonin Raffin et al.) / Reinforcement learning / PyTorch
  • PyG - Matthias Fey / Graph neural networks / PyTorch
  • ONNX, Site - ONNX (Microsoft and Meta) / Model format / Interoperability
  • spaCy, Site - Matthew Honnibal and Ines Montani / NLP / Python
  • NLTK, Site - Steven Bird and Edward Loper / NLP / Education
  • SHAP, Docs - Scott Lundberg / Model explanations / Interpretability
  • PyMC, Site - PyMC developers / Bayesian modeling / Python
  • Pyro, Site - Uber AI Labs / Probabilistic programming / PyTorch
  • Gradio - Abubakar Abid (Hugging Face) / ML demos / Web UI
  • Streamlit, Site - Streamlit (Snowflake) / Data apps / Python
  • marimo, Site - marimo (Akshay Agrawal) / Reactive notebooks / Python
  • JupyterLab, Docs - Project Jupyter / Notebooks / Data science
  • Matplotlib, Docs - John D. Hunter / Plotting / Python
  • Weights & Biases SDK, Site - Weights & Biases / Experiment tracking / Python
  • fastai, Docs - Jeremy Howard and Sylvain Gugger / Deep learning / PyTorch
  • tinygrad - George Hotz / Deep learning / Minimal code
  • bitsandbytes, Docs - Tim Dettmers / Quantization / CUDA
  • timm, Docs - Ross Wightman / Vision models / PyTorch
  • tiktoken - OpenAI / Tokenizer / BPE
  • Stanza, Site - Stanford NLP (Christopher Manning's group) / NLP toolkit / Python
  • Flax, Docs - Google / Neural networks / JAX
  • safetensors, Docs - Hugging Face / Model file format / Safe loading
  • MediaPipe, Site - Google / On-device ML / Vision

Developer tools and editors

  • fd - David Peter (sharkdp) / File search / CLI / Rust
  • Visual Studio Code, Site - Microsoft (Erich Gamma et al.) / Code editor / Electron
  • uv, Docs - Charlie Marsh (Astral) / Python packages / Rust
  • Neovim, Site - Neovim community (Thiago de Arruda) / Text editor / Lua
  • Zed, Site - Nathan Sobo (Atom creators) / Code editor / Rust / Fast
  • Helix, Site - Blaž Hrastnik / Modal editor / Rust
  • IntelliJ IDEA Community, Site - JetBrains / IDE / Java and Kotlin
  • ripgrep - Andrew Gallant (BurntSushi) / Search / CLI / Rust
  • bat - David Peter (sharkdp) / cat with syntax highlighting / CLI
  • fzf, Site - Junegunn Choi / Fuzzy finder / CLI
  • jq, Site - Stephen Dolan / JSON processor / CLI
  • tmux - Nicholas Marriott / Terminal multiplexer / Terminal
  • Oh My Zsh, Site - Robby Russell / Shell config / Zsh
  • fish, Site - Axel Liljencrantz and fish team / Shell / Rust
  • Nushell, Site - Jonathan Turner, Yehuda Katz, Andrés Robalino / Shell / Structured data
  • Starship, Site - Matan Kushner / Shell prompt / Rust
  • lazygit - Jesse Duffield / Git UI / Terminal
  • GitHub CLI - GitHub / Git hosting / CLI
  • pnpm, Site - Zoltan Kochan / Package manager / JavaScript
  • Bun, Site - Jarred Sumner / JavaScript runtime / Bundler / Zig
  • Biome, Site - Biome community (Rome successors) / Linter / Formatter / Rust
  • Prettier, Site - James Long and Christopher Chedeau / Code formatter / JavaScript
  • ESLint, Site - Nicholas C. Zakas / Linter / JavaScript
  • Puppeteer, Site - Google Chrome team / Browser automation / Node.js
  • Vitest, Site - Anthony Fu and Vitest team / Testing / Vite
  • Jest, Site - Meta (Christoph Nakazawa) / Testing / JavaScript
  • WezTerm, Site - Wez Furlong / Terminal emulator / Rust
  • Alacritty, Site - Joe Wilm / Terminal emulator / GPU
  • zoxide - Ajeet D'Souza / Smarter cd / CLI
  • delta, Site - Dan Davison / Git diff viewer / CLI
  • eza, Site - eza community / ls replacement / CLI
  • tldr pages, Site - tldr-pages community / Command examples / CLI
  • Atuin, Site - Ellie Huxtable / Shell history / Sync
  • direnv, Site - Jonas Pfenniger / Environment variables / Shell
  • Jujutsu, Site - Martin von Zweigbergk / Version control / Git compatible
  • pre-commit, Site - Anthony Sottile / Git hooks / Linting
  • Hoppscotch, Site - Liyas Thomas / API client / Web
  • Bruno, Site - Anoop M D / API client / Offline
  • difftastic, Site - Wilfred Hughes / Structural diff / CLI
  • just, Site - Casey Rodarmor / Command runner / CLI
  • mise, Site - Jeff Dickey / Dev tool versions / Tasks
  • Homebrew, Site - Max Howell / Package manager / macOS
  • Nix, Site - Eelco Dolstra / Package manager / Reproducible builds
  • Nixpkgs - NixOS community / Package collection / Linux and macOS
  • Dear ImGui - Omar Cornut / GUI library / C++
  • GoReleaser, Site - Carlos Becker / Release automation / Go
  • rendergit - Andrej Karpathy / Git repo to one HTML page / No license
  • nbdev, Site - Jeremy Howard and Hamel Husain / Notebooks / Literate programming
  • LLM, Site - Simon Willison / CLI / LLM access / Plugins
  • Cosmopolitan - Justine Tunney / C library / Portable binaries
  • Git, Site - Linus Torvalds (maintained by Junio Hamano) / Version control / C
  • Fossil - D. Richard Hipp / Version control / Wiki / Bug tracker
  • kilo - Salvatore Sanfilippo (antirez) / Text editor / C / Tiny
  • curl, Site - Daniel Stenberg / HTTP client / CLI / Library
  • Vim, Site - Bram Moolenaar / Text editor / Terminal
  • GNU Emacs, Source - Richard Stallman / Text editor / Lisp
  • esbuild, Site - Evan Wallace / JavaScript bundler / Go
  • kitty, Site - Kovid Goyal / Terminal emulator / GPU
  • Ghostty, Site - Mitchell Hashimoto / Terminal emulator / Zig
  • Playwright, Site - Microsoft / Browser testing / Automation
  • Ruff, Docs - Charlie Marsh (Astral) / Python linter / Rust
  • hyperfine - David Peter (sharkdp) / Benchmarking / CLI

Programming languages and compilers

  • Swift, Site - Chris Lattner (Apple) / Programming language / Apple platforms
  • .NET Runtime, Docs - Microsoft / Runtime / C#
  • Carbon, Docs - Google (Chandler Carruth) / Programming language / C++ successor
  • QuickJS, Site - Fabrice Bellard / JavaScript engine / Embeddable
  • Node.js, Site - Ryan Dahl / JavaScript runtime / Server
  • Rust, Site - Graydon Hoare and Rust project / Programming language / Memory safety
  • Go, Site - Robert Griesemer, Rob Pike, Ken Thompson / Programming language / Concurrency
  • GCC - Richard Stallman and GNU project / Compiler / C and C++
  • Mojo, Docs - Chris Lattner (Modular) / Programming language / AI hardware
  • Kotlin, Site - JetBrains (Andrey Breslav) / Programming language / JVM and Android
  • Erlang/OTP, Site - Joe Armstrong, Robert Virding, Mike Williams / Programming language / Fault tolerance
  • Gleam, Site - Louis Pilfold / Programming language / Type safe / BEAM
  • Julia, Site - Jeff Bezanson, Stefan Karpinski, Viral Shah, Alan Edelman / Programming language / Scientific computing
  • OCaml, Site - Xavier Leroy (INRIA) / Programming language / Functional
  • GHC, Site - Simon Peyton Jones and Simon Marlow / Haskell compiler / Functional
  • Scala 3, Site - Martin Odersky / Programming language / JVM
  • OpenJDK - Oracle and OpenJDK community (James Gosling origins) / Java / JVM
  • Nim, Site - Andreas Rumpf / Programming language / Compiled
  • Crystal, Site - Ary Borenszweig, Juan Wajnerman, Brian Cardiff / Programming language / Ruby-like
  • Odin, Site - Ginger Bill / Programming language / Systems
  • Wasmtime, Site - Bytecode Alliance / WebAssembly runtime / Rust
  • Emscripten - Alon Zakai / Compile to WebAssembly / C and C++
  • MicroPython, Site - Damien George / Python / Microcontrollers
  • Pyodide, Docs - Michael Droettboom (Mozilla) / Python in the browser / WebAssembly
  • Roc, Site - Richard Feldman / Programming language / Functional
  • CoffeeScript, Site - Jeremy Ashkenas / Compile to JavaScript / Historic
  • Mypy, Site - Jukka Lehtosalo / Python type checker / Static typing
  • PyPy, Site - PyPy team (Armin Rigo et al.) / Python / JIT compiler
  • CPython, Site - Guido van Rossum / Python language / Interpreter
  • Ruby, Site - Yukihiro Matsumoto (Matz) / Programming language / Interpreter
  • Perl 5, Site - Larry Wall / Programming language / Scripting
  • PHP, Site - Rasmus Lerdorf / Programming language / Web
  • Lua, Site - Roberto Ierusalimschy, Luiz Henrique de Figueiredo, Waldemar Celes / Programming language / Embeddable
  • The One True Awk - Brian Kernighan / Text processing / Unix
  • Clojure, Site - Rich Hickey / Programming language / Lisp / JVM
  • Elixir, Site - José Valim / Programming language / BEAM
  • Zig, Site - Andrew Kelley / Programming language / Compiler
  • TypeScript, Site - Anders Hejlsberg (Microsoft) / Typed JavaScript / Compiler
  • Roslyn, Docs - Microsoft (Anders Hejlsberg's C# team) / C# compiler / Analyzers
  • V8, Source - Google (Lars Bak) / JavaScript engine / C++
  • TinyCC, Site - Fabrice Bellard / C compiler / Tiny
  • Deno, Site - Ryan Dahl / JavaScript runtime / TypeScript
  • LLVM, Site - Chris Lattner / Compiler infrastructure / C++

Operating systems and infrastructure

  • rsync, Site - Andrew Tridgell / File sync / CLI
  • FreeBSD, Site - FreeBSD Project / Operating system / BSD
  • OpenBSD - Theo de Raadt / Operating system / Security
  • Redox - Jeremy Soller / Operating system / Rust
  • Haiku - Haiku Project / Operating system / BeOS successor
  • ReactOS, Site - ReactOS Project / Operating system / Windows compatible
  • Asahi Linux - Asahi Linux (founded by Hector Martin) / Linux on Apple silicon / Kernel
  • Kubernetes, Site - Google (Joe Beda, Brendan Burns, Craig McLuckie) / Containers / Orchestration
  • Moby (Docker Engine), Site - Solomon Hykes (Docker) / Containers / Engine
  • Docker Compose, Docs - Docker / Multi-container apps / CLI
  • containerd, Site - CNCF (Docker origins) / Container runtime / Containers
  • Podman, Site - Red Hat / Containers / Daemonless
  • k3s, Site - Rancher (Darren Shepherd) / Lightweight Kubernetes / Edge and IoT
  • Helm, Site - Helm (Deis origins) / Kubernetes packages / Package manager
  • Prometheus, Site - SoundCloud (Matt Proud, Julius Volz) / Monitoring / Time series
  • Grafana, Site - Torkel Ödegaard / Dashboards / Observability
  • Envoy, Site - Matt Klein (Lyft) / Proxy / Service mesh
  • Caddy, Site - Matt Holt / Web server / Automatic HTTPS
  • Traefik, Site - Emile Vauge / Reverse proxy / Containers
  • HAProxy, Source - Willy Tarreau / Load balancer / Proxy
  • Apache HTTP Server, Site - Apache Software Foundation / Web server / Classic
  • etcd, Site - CoreOS / Key-value store / Consensus
  • OpenTofu, Site - Linux Foundation / Infrastructure as code / Terraform fork
  • Ansible, Site - Michael DeHaan / Automation / Configuration
  • systemd, Site - Lennart Poettering / Init system / Linux
  • Firecracker, Site - AWS / MicroVMs / Serverless
  • Cilium, Site - Isovalent (Thomas Graf) / Networking / eBPF
  • Istio, Site - Google, IBM, Lyft / Service mesh / Kubernetes
  • Argo CD, Docs - Intuit (Argo project) / GitOps / Kubernetes
  • OpenTelemetry Collector, Site - OpenTelemetry (CNCF) / Telemetry / Observability
  • CoreDNS, Site - Miek Gieben / DNS server / Kubernetes
  • Tailscale, Site - Tailscale (Avery Pennarun, Brad Fitzpatrick et al.) / Mesh VPN / WireGuard
  • Netdata, Site - Costa Tsaousis / Monitoring / Real time
  • OpenZFS, Site - OpenZFS (Sun Microsystems origins) / File system / Storage
  • Mesa, Site - Brian Paul and Mesa developers / Graphics drivers / OpenGL and Vulkan
  • Garage, Site - Deuxfleurs / Object storage / S3 compatible
  • Ceph - Sage Weil / Distributed storage / Object and block storage
  • Proxmox VE, Site - Proxmox / Virtualization / Hypervisor
  • Talos Linux, Site - Sidero Labs / Kubernetes OS / Immutable
  • Pulumi, Site - Pulumi (Joe Duffy) / Infrastructure as code / Real languages
  • Linux, Site - Linus Torvalds / Kernel / Operating system / C
  • QEMU, Site - Fabrice Bellard / Emulator / Virtualization
  • nginx, Site - Igor Sysoev / Web server / Reverse proxy
  • SerenityOS, Site - Andreas Kling / Operating system / C++
  • Omarchy, Site - David Heinemeier Hansson / Linux setup / Arch / Hyprland
  • Samba, Site - Andrew Tridgell / File sharing / SMB

Databases and data

  • Apache Arrow, Site - Wes McKinney and Jacques Nadeau / Columnar memory format / Data interchange
  • TiDB, Site - PingCAP / Distributed SQL / MySQL compatible
  • Apache Airflow, Site - Maxime Beauchemin (Airbnb) / Workflow orchestration / Python
  • Datasette, Site - Simon Willison / Data publishing / SQLite
  • PostgreSQL, Site - PostgreSQL Global Development Group (Michael Stonebraker origins) / Relational database / SQL
  • Valkey, Site - Linux Foundation / Key-value store / Redis fork
  • MySQL - Oracle (created by Michael Widenius, David Axmark, Allan Larsson) / Relational database / SQL
  • MariaDB, Site - Michael "Monty" Widenius / Relational database / MySQL fork
  • DuckDB, Site - Mark Raasveldt and Hannes Mühleisen / Analytics database / Embedded
  • ClickHouse, Site - Alexey Milovidov / Analytics database / Columnar
  • Apache Kafka, Site - Jay Kreps, Neha Narkhede, Jun Rao / Event streaming / Message queue
  • Apache Spark, Site - Matei Zaharia / Big data processing / Distributed computing
  • Apache Cassandra, Site - Avinash Lakshman and Prashant Malik (Facebook) / Wide-column database / Distributed
  • QuestDB, Site - QuestDB (Vlad Ilyushchenko) / Time series database / SQL
  • InfluxDB, Site - Paul Dix / Time series database / Metrics
  • Meilisearch, Site - Meilisearch / Search engine / Rust
  • Typesense, Site - Jason Bosco and Kishore Nallan / Search engine / Typo tolerant
  • OpenSearch, Docs - OpenSearch Software Foundation / Search engine / Analytics
  • Qdrant, Site - Qdrant / Vector database / Rust
  • Milvus - Zilliz / Vector database / Similarity search
  • Weaviate, Site - Weaviate / Vector database / Hybrid search
  • Chroma, Site - Chroma / Vector database / Embeddings
  • pgvector - Andrew Kane / Vector search / PostgreSQL
  • LanceDB, Docs - LanceDB / Vector database / Embedded
  • Faiss, Site - Meta AI (FAIR) / Vector search / Similarity
  • Supabase, Site - Supabase / Postgres platform / Backend
  • Dagster, Site - Nick Schrock / Data orchestration / Python
  • Polars, Docs - Ritchie Vink / DataFrames / Rust
  • Apache Iceberg, Site - Ryan Blue and Dan Weeks (Netflix) / Table format / Data lake
  • Delta Lake, Site - Databricks / Table format / Data lake
  • dbt, Site - dbt Labs / SQL transformations / Analytics
  • Metabase, Site - Metabase / BI / Dashboards
  • Neon, Site - Neon (Nikita Shamgunov, Heikki Linnakangas) / Serverless Postgres / Branching
  • rqlite, Site - Philip O'Toole / Distributed SQLite / Raft
  • Turso - Turso (Glauber Costa, Pekka Enberg) / SQLite rewrite / Rust
  • Apache DataFusion, Site - Andy Grove / Query engine / Rust
  • Prisma ORM, Site - Prisma / ORM / TypeScript
  • Drizzle ORM, Site - Drizzle Team / ORM / TypeScript
  • SQLAlchemy, Site - Mike Bayer / ORM / Python
  • TigerBeetle, Site - Joran Dirk Greef / Financial database / Zig
  • Apache Doris, Site - Baidu origins / Analytics database / Real time
  • Electric, Site - ElectricSQL / Postgres sync / Local-first
  • jobs - Andrej Karpathy / US jobs data explorer / BLS data / No license
  • SQLite, Site - D. Richard Hipp / Embedded database / C
  • Redis, Site - Salvatore Sanfilippo (antirez) / In-memory database / Cache
  • memcached, Site - Brad Fitzpatrick / Cache / In-memory
  • simdjson, Site - Daniel Lemire and Geoff Langdale / JSON parser / SIMD
  • pandas, Site - Wes McKinney / DataFrames / Python
  • TiKV, Site - PingCAP / Distributed key-value store / Rust
  • Apache Superset, Site - Maxime Beauchemin / BI dashboards / Data exploration
  • sqlite-utils, Site - Simon Willison / SQLite / CLI / Python

Web frameworks and frontend

  • Angular, Site - Google / Frontend framework / TypeScript
  • SvelteKit, Docs - Rich Harris / Svelte framework / Full stack
  • Observable Plot - Mike Bostock (Observable) / Charts / JavaScript
  • Vue, Site - Evan You / Frontend framework / JavaScript
  • React, Site - Jordan Walke (Meta, now React Foundation) / UI library / JavaScript
  • Next.js, Site - Vercel (Guillermo Rauch) / React framework / Full stack
  • SolidJS, Site - Ryan Carniato / Frontend framework / Fine-grained reactivity
  • Preact, Site - Jason Miller / UI library / Tiny
  • Astro, Site - Fred K. Schott / Content sites / Islands
  • React Router, Site - Ryan Florence and Michael Jackson / Routing / React framework
  • Nuxt, Site - Sébastien and Alexandre Chopin / Vue framework / Full stack
  • Tailwind CSS, Site - Adam Wathan / CSS framework / Utility classes
  • Django, Site - Adrian Holovaty and Simon Willison / Web framework / Python
  • Flask, Site - Armin Ronacher / Web framework / Python
  • FastAPI, Site - Sebastián Ramírez / API framework / Python
  • Laravel, Site - Taylor Otwell / Web framework / PHP
  • Express, Site - TJ Holowaychuk / Web framework / Node.js
  • Hono, Site - Yusuke Wada / Web framework / Edge runtimes
  • Gin, Site - Manu Martinez-Almeida / Web framework / Go
  • Spring Boot, Site - VMware (Spring team) / Web framework / Java
  • Axum - Tokio project (David Pedersen) / Web framework / Rust
  • Tokio, Site - Carl Lerche / Async runtime / Rust
  • Phoenix, Site - Chris McCord / Web framework / Elixir
  • htmx, Site - Carson Gross / HTML over the wire / Hypermedia
  • Alpine.js, Site - Caleb Porzio / JavaScript / Lightweight
  • shadcn/ui, Site - shadcn / UI components / React
  • TanStack Query, Site - Tanner Linsley / Data fetching / React
  • tRPC, Site - Alex Johansson / Type-safe APIs / TypeScript
  • Zustand, Site - Poimandres (Paul Henschel, Daishi Kato) / State management / React
  • Redux, Site - Dan Abramov and Andrew Clark / State management / JavaScript
  • React Native, Site - Meta (now React Foundation) / Mobile apps / React
  • Tauri, Site - Tauri (Daniel Thompson-Yvetot) / Desktop apps / Rust
  • Electron, Site - GitHub (Cheng Zhao) / Desktop apps / Chromium
  • Leptos, Site - Greg Johnston / Web framework / Rust
  • Dioxus, Site - Jonathan Kelley / UI framework / Rust
  • Storybook, Site - Storybook / UI components / Testing
  • Webpack, Site - Tobias Koppers / Bundler / JavaScript
  • Rolldown, Site - VoidZero (Evan You) / Bundler / Rust
  • Expo, Docs - Expo (Charlie Cheever, James Ide) / React Native / Mobile apps
  • FastHTML, Docs - Jeremy Howard (Answer.AI) / Web framework / Python
  • Ruby on Rails, Site - David Heinemeier Hansson / Web framework / Ruby
  • jQuery, Site - John Resig / JavaScript library / DOM
  • three.js, Site - Ricardo Cabello (mrdoob) / 3D graphics / WebGL
  • Flutter, Site - Google / Cross-platform UI / Dart
  • Svelte, Site - Rich Harris / Frontend framework / Compiler
  • D3, Site - Mike Bostock / Data visualization / JavaScript
  • Vite, Site - Evan You / Build tool / Dev server

Self-hosted apps

  • Immich, Site - Alex Tran / Photo backup / Google Photos alternative
  • Nextcloud, Site - Frank Karlitschek / File sync / Collaboration
  • Jellyfin, Site - Jellyfin community / Media server / Streaming
  • Home Assistant, Site - Paulus Schoutsen / Home automation / Smart home
  • Syncthing, Site - Jakob Borg / File sync / Peer to peer
  • PhotoPrism, Site - Michael Mayer / Photo library / AI tagging
  • Paperless-ngx - Paperless-ngx community / Document archive / OCR
  • Gitea, Site - Gitea community / Git hosting / Go
  • Forgejo, Site - Forgejo community (Codeberg) / Git hosting / Community-owned
  • Mastodon, Site - Eugen Rochko / Social network / Fediverse
  • Synapse, Site - Matrix.org Foundation (now Element) / Chat server / Matrix
  • Pi-hole, Site - Jacob Salmela / Ad blocking / DNS
  • AdGuard Home, Site - AdGuard / Ad blocking / DNS
  • Uptime Kuma, Site - Louis Lam / Uptime monitoring / Status pages
  • Portainer, Site - Portainer / Container management / Web UI
  • Coolify, Site - Andras Bacsai / Self-hosted PaaS / Deploys
  • Ghost, Site - John O'Nolan and Hannah Wolfe / Publishing / Newsletters
  • Discourse, Site - Jeff Atwood, Robin Ward, Sam Saffron / Forum / Community
  • Excalidraw, Site - Christopher Chedeau (vjeux) / Whiteboard / Diagrams
  • AppFlowy, Site - AppFlowy / Notes and docs / Notion alternative
  • Logseq, Site - Logseq / Outliner / Knowledge base
  • Plausible Analytics, Site - Uku Täht and Marko Saric / Web analytics / Privacy
  • Umami, Site - Mike Cao / Web analytics / Privacy
  • Cal.diy, Site - Cal.com community (Peer Richelsen and Bailey Pumfleet) / Scheduling / Calendly alternative / Community edition
  • Penpot, Site - Kaleidos / Design tool / Figma alternative
  • ERPNext, Site - Frappe (Rushabh Mehta) / ERP / Business
  • Odoo, Site - Fabien Pinckaers / ERP / Business apps
  • Karakeep, Site - Mohamed Bassem / Bookmarks / AI tagging
  • Audiobookshelf, Site - advplyr / Audiobooks / Podcasts
  • Navidrome, Site - Deluan Quintão / Music server / Subsonic
  • FreshRSS, Site - FreshRSS community (Marien Fressinaud) / RSS reader / PHP
  • Miniflux, Site - Frédéric Guillot / RSS reader / Minimal
  • wallabag, Site - Nicolas Lœuillet / Read later / Articles
  • Stirling-PDF, Site - Stirling Tools / PDF tools / Web app
  • SearXNG, Docs - SearXNG community / Metasearch / Privacy
  • Homepage, Site - Ben Phelps / Dashboard / Start page
  • Node-RED, Site - Nick O'Leary and Dave Conway-Jones (IBM) / Flow-based automation / IoT
  • Mealie, Docs - Hayden (hay-kot) / Recipes / Meal planning
  • Actual Budget, Site - James Long / Budgeting / Local-first
  • Firefly III - James Cole / Personal finance / Budgeting
  • BookStack, Site - Dan Brown / Wiki / Documentation
  • Chatwoot, Site - Chatwoot / Customer support / Live chat
  • Appwrite, Site - Eldad Fux / Backend server / APIs
  • Linkwarden, Site - Daniel (daniel31x13) / Bookmarks / Archiving
  • Rocket.Chat, Site - Rocket.Chat (Gabriel Engel) / Team chat / Slack alternative
  • PostHog, Site - PostHog (James Hawkins, Tim Glaser) / Product analytics / Session replay

Security and privacy

  • Signal for Android, Site - Signal (Moxie Marlinspike) / Encrypted messaging / Android
  • OpenSSL, Site - OpenSSL Project (Eric Young origins) / TLS / Cryptography
  • OpenSSH Portable - OpenBSD (Tatu Ylönen origins) / SSH / Remote access
  • WireGuard - Jason A. Donenfeld / VPN / Kernel networking
  • KeePassXC, Site - KeePassXC team / Password manager / Offline
  • Bitwarden, Site - Bitwarden (Kyle Spearrin) / Password manager / Cross-platform
  • Vaultwarden - Daniel García / Password server / Bitwarden compatible
  • Tor - Roger Dingledine and Nick Mathewson / Anonymity network / Privacy
  • Wireshark, Site - Gerald Combs / Packet analysis / Networking
  • mitmproxy, Site - Aldo Cortesi and Maximilian Hils / HTTPS proxy / Debugging
  • hashcat, Site - Jens Steube / Password recovery / GPU
  • ZAP, Site - Simon Bennetts (OWASP origins) / Web app scanner / Security testing
  • sqlmap, Site - Bernardo Damele and Miroslav Stampar / SQL injection testing / Python
  • Metasploit Framework, Site - H. D. Moore / Penetration testing / Exploits
  • Nuclei, Docs - ProjectDiscovery / Vulnerability scanner / Templates
  • Trivy, Site - Aqua Security (Teppei Fukuda) / Container scanning / SBOM
  • Gitleaks, Site - Zachary Rice / Secret scanning / Git
  • TruffleHog, Site - Truffle Security (Dylan Ayrey) / Secret scanning / Credential detection
  • age, Site - Filippo Valsorda / File encryption / CLI
  • Cosign - Sigstore (Linux Foundation) / Signing / Supply chain
  • OpenBao, Site - OpenBao (Linux Foundation) / Secrets management / Vault fork
  • Wazuh, Site - Wazuh / SIEM / Endpoint security
  • CrowdSec, Docs - CrowdSec / Intrusion prevention / Crowd-sourced
  • Fail2Ban, Site - Cyril Jaquier / Brute-force protection / Linux
  • Certbot - EFF / HTTPS certificates / Let's Encrypt
  • Boulder - Let's Encrypt (ISRG) / Certificate authority / ACME
  • step-ca, Site - Smallstep / Private CA / ACME
  • GnuPG - Werner Koch / Encryption / Signing
  • VeraCrypt, Site - Mounir Idrassi (IDRIX) / Disk encryption / TrueCrypt successor
  • Cryptomator, Site - Skymatic / Cloud encryption / Desktop
  • Ente, Site - Vishnu Mohandas / Encrypted photos / Authenticator
  • Headscale - Juan Font / Tailscale control server / Self-hosted
  • NetBird, Site - NetBird / Mesh VPN / WireGuard
  • YARA, Site - Victor M. Alvarez (VirusTotal) / Malware rules / Pattern matching
  • osquery, Site - Meta (Facebook origins) / Endpoint visibility / SQL
  • Falco, Site - Sysdig (Loris Degioanni) / Runtime security / Containers
  • Semgrep, Site - Semgrep (r2c) / Static analysis / Code scanning
  • Lynis, Site - Michael Boelen / Security auditing / Linux
  • Ghidra - NSA / Reverse engineering / Decompiler
  • radare2, Site - Sergi Alvarez (pancake) / Reverse engineering / CLI
  • x64dbg, Site - Duncan Ogilvie (mrexodia) / Debugger / Windows
  • bettercap, Site - Simone Margaritelli (evilsocket) / Network attacks / Wi-Fi
  • OpenVPN, Site - James Yonan / VPN / TLS tunnels
  • Mullvad VPN app, Site - Mullvad / VPN client / Privacy
  • GrapheneOS - GrapheneOS Foundation (Daniel Micay) / Private Android / Hardening
  • Brave, Site - Brendan Eich (Brave) / Private browser / Ad blocking
  • Tails - Tails project / Amnesic OS / Privacy
  • Proton Pass - Proton / Password manager / Android
  • uBlock Origin - Raymond Hill (gorhill) / Content blocker / Browser extension
  • libsignal - Signal (Moxie Marlinspike, Trevor Perrin) / Signal Protocol / Cryptography

Media and creative tools

  • Krita, Site - KDE community / Digital painting / Illustration
  • DOOM - John Carmack (id Software) / Game engine / C / Historic
  • OBS Studio, Site - Hugh "Jim" Bailey / Streaming / Screen recording
  • VLC, Site - VideoLAN (Jean-Baptiste Kempf) / Media player / Codecs
  • Blender, Site - Ton Roosendaal / 3D creation / Animation
  • GIMP - Spencer Kimball and Peter Mattis / Image editor / Photoshop alternative
  • Inkscape - Inkscape community / Vector graphics / SVG
  • Audacity, Docs - Dominic Mazzoni and Roger Dannenberg / Audio editor / Recording
  • darktable, Site - Johannes Hanika / RAW photo editing / Photo workflow
  • ImageMagick, Site - John Cristy / Image processing / CLI
  • HandBrake, Site - Eric Petit / Video transcoder / Video conversion
  • mpv, Site - mpv community / Media player / Minimal
  • Shotcut, Site - Dan Dennedy / Video editor / Cross-platform
  • Godot, Site - Juan Linietsky and Ariel Manzur / Game engine / 2D and 3D
  • ComfyUI, Site - comfyanonymous / Image generation / Node graph
  • Stable Diffusion web UI - AUTOMATIC1111 / Image generation / Web UI
  • InvokeAI, Site - Invoke / Image generation / Creative tools
  • yt-dlp - yt-dlp community / Video downloader / CLI
  • MuseScore, Site - Werner Schweer / Music notation / Composition
  • LMMS, Site - LMMS community / Music production / DAW
  • Ardour, Site - Paul Davis / DAW / Audio recording
  • FreeCAD, Site - Jürgen Riegel, Werner Mayer, Yorik van Havre / 3D CAD / Parametric
  • OpenSCAD, Site - Marius Kintel and Clifford Wolf / 3D CAD / Code-based
  • KiCad, Site - Jean-Pierre Charras / PCB design / Electronics
  • Typst, Site - Laurenz Mädje and Martin Haug / Typesetting / LaTeX alternative
  • libvips, Site - John Cupitt / Image processing / Fast
  • Upscayl, Site - Nayam Amarshe and TGS963 / AI image upscaling / Desktop
  • raylib, Site - Ramon Santamaria (raysan5) / Game library / C
  • SDL, Site - Sam Lantinga / Multimedia library / Games
  • Bevy, Site - Carter Anderson / Game engine / Rust
  • Natron, Site - Alexandre Gauthier / Compositing / VFX
  • Pixelorama, Site - Orama Interactive / Pixel art editor / Godot
  • Mermaid, Site - Knut Sveidqvist / Diagrams from text / Markdown
  • Motion Canvas, Site - aarthificial / Animations in code / TypeScript
  • FFmpeg, Site - Fabrice Bellard / Audio and video / Codecs / C
  • Manim - Grant Sanderson (3Blue1Brown) / Math animation / Python
  • Kdenlive, Site - KDE community / Video editor / KDE
  • Quake III Arena - John Carmack (id Software) / Game engine / C / Historic

Desktop and everyday apps

  • PowerToys - Microsoft / Windows utilities / Productivity
  • Firefox - Mozilla / Web browser / Gecko engine
  • LibreOffice - The Document Foundation / Office suite / Documents and spreadsheets
  • Signal Desktop, Site - Signal / Encrypted messaging / Desktop
  • Telegram Desktop, Site - Telegram / Messaging / Desktop
  • Joplin, Site - Laurent Cozic / Notes / Sync
  • Standard Notes, Site - Standard Notes / Encrypted notes / End-to-end encryption
  • Zotero, Site - Center for History and New Media (GMU) / Research citations / Reference manager
  • qBittorrent, Site - Christophe Dumez / BitTorrent client / Desktop app
  • Transmission - Eric Petit / BitTorrent client / Lightweight
  • LocalSend, Site - Tien Do Nam / File sharing / Local network
  • Flameshot, Site - Juan Gonzalez (lupoDharkael) / Screenshots / Annotation
  • ShareX, Site - Jaex / Screenshots / Windows
  • AutoHotkey - Chris Mallett and Steve Gray / Automation / Windows
  • RustDesk, Site - RustDesk / Remote desktop / TeamViewer alternative
  • Rectangle, Site - Ryan Hanson / Window manager / macOS
  • espanso, Site - Federico Terzi / Text expander / Productivity
  • Anki, Site - Damien Elmes / Flashcards / Spaced repetition
  • Notepad++, Site - Don Ho / Text editor / Windows
  • Thunderbird (Android) - Mozilla Thunderbird (K-9 Mail origins) / Email / Android
  • F-Droid client, Site - F-Droid / App store / Android
  • NewPipe, Site - Christian Schabesberger / YouTube client / Android
  • Organic Maps, Site - Organic Maps (Alexander Borsuk, Viktor Govako) / Offline maps / OpenStreetMap
  • CoMaps, Site - CoMaps community / Offline maps / Navigation
  • IINA, Site - Collider Li / Media player / macOS
  • Stats, Site - Serhiy Mytrovtsiy / System monitor / macOS menu bar
  • Ice, Site - Jordan Baird / Menu bar manager / macOS
  • Maccy, Site - Alex Rodionov / Clipboard manager / macOS
  • AeroSpace, Docs - Nikita Bobko / Tiling window manager / macOS
  • Hammerspoon, Site - Hammerspoon community / Automation / macOS / Lua
  • Subsurface, Site - Linus Torvalds and Dirk Hohndel / Dive log / Desktop app
  • PuTTY - Simon Tatham / SSH client / Windows
  • 7-Zip - Igor Pavlov / File archiver / Compression
  • calibre, Site - Kovid Goyal / Ebook manager / Desktop app
  • Ladybird, Site - Andreas Kling / Web browser / Independent engine
  • Windows Terminal - Microsoft / Terminal / Windows

Learning resources

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