Open-source plugins that specialize Claude for knowledge-work roles like sales, legal, finance, and support, for use in Claude Cowork.
Framework for creating videos programmatically using React components, with rendering to MP4 and other formats.
FastAPI is a Python web framework for building APIs using standard type hints, with automatic OpenAPI and JSON Schema documentation.
Reverse-engineering analysis plugin and visual workbench for DeepSeek Harness, combining static analysis, debugging, HTTP capture and protocol decoding.
Provides a PyTorch backend that runs PyTorch models and operations on Google's Tensor Processing Units (TPUs).
Python library and SDK that builds a hierarchical tree index of documents so an LLM can reason through it for retrieval, without vector databases or chunking.
MCP server and Unity Editor package that lets AI assistants control scenes, scripts, assets, tests, and builds in Unity.
Open-source text-to-speech library with a 1.7B 1-bit speech model and lightweight ONNX models that run on CPU.
Rust GUI component library and framework for building cross-platform desktop apps on the GPUI rendering engine.
Python library that uses LLMs and graph-based pipelines to extract structured data from websites and local documents from a natural-language prompt.
A React framework for building full-stack web applications with server rendering, static generation, and routing.
A C library for videogame programming with 2D/3D graphics, input, audio, and windowing across desktop, mobile, web, and embedded platforms.
A Python-embedded domain-specific language and TVM-based compiler for writing high-performance GPU, CPU, and NPU kernels.
Open-source Python framework for training and backtesting financial trading agents with deep reinforcement learning.
Framework for building cross-platform desktop apps with JavaScript, HTML, and CSS, based on Node.js and Chromium.
Framework for building small native desktop apps with a txiki.js JavaScript backend and a system webview frontend.
A mod loader and C++ modding SDK for Geometry Dash that provides hooks, UI, and tooling for building mods.
Python library providing GPU-accelerated tensor computation like NumPy, plus a tape-based autograd system for building deep neural networks.
Static recompilation runtime libraries and analysis tools for translating PlayStation 3 binaries into native C/C++ executables.
Gin is a Go HTTP web framework with a Martini-like API built on httprouter for fast REST APIs and web services.
Open-source SDK for building and running AI agents in Python and TypeScript, with a fully assembled harness and a model-agnostic agent loop.
Java framework for building distributed, long-running agents with an event stream, tool-call permissions, middleware, and sandboxed workspaces.
Open-source TypeScript SDK for embedding spreadsheet, document, presentation, and table editing into your own applications.
Static recompiler and runtime that converts Xbox 360 PowerPC code into portable C++ runnable on modern platforms.
A library of model optimization techniques (quantization, pruning, distillation, NAS, speculative decoding, sparsity) that exports compressed checkpoints for inference frameworks.
Swift SDK running open-source speech models (ASR, TTS, VAD, speaker diarization) locally on Apple devices via CoreML and the Neural Engine.
An end-to-end open source platform for building and deploying machine learning models, with Python and C++ APIs.
Google's open-source SDK for building natively compiled mobile, web, and desktop apps from a single Dart codebase.
Offline IP-to-region lookup library and data management framework supporting IPv4 and IPv6 with xdb query clients.
Inference code, checkpoints, and notebooks for Meta's Segment Anything Model (SAM), which produces object masks from points, boxes, or automatically for whole images.
Cross-browser test suite for Web platform specifications, run in all major browsers to check interoperability.
A cross-browser library of ready-made CSS animation classes applied by adding a class name to an element.
Open-source framework and toolkit of container components created by Docker for assembling custom container-based systems.
General-purpose toolkit implementing TLS, DTLS, and QUIC protocols on top of a standalone cryptographic library and CLI.
Godot 4 addon for creating dialogs, visual novels, and RPG conversations, with character management.
A C++ project that reverse-engineers GTA: San Andreas and rewrites its functions as a DLL that replaces the in-game code.
PyTorch library for audio generation research, providing inference and training code for MusicGen, AudioGen, and EnCodec.
Cross-platform C library for low-level access to graphics, input, audio, and windowing, used to build games and multimedia software.
Meta's Segment Anything Model 2 for promptable segmentation in images and videos, with inference code, checkpoints, and example notebooks.
Specification and Scala tooling for the Code Property Graph, a language-agnostic representation of program code for analysis.
Toolkit for building native desktop apps with TypeScript and a custom markup language, compiled to a native executable.
Python toolkit for speaker diarization built on PyTorch, with pretrained pipelines and models that can be fine-tuned on your own data.
A PHP framework and set of reusable components for building web and console applications.
An iOS library that natively renders After Effects vector animations exported as Bodymovin JSON.
Cross-platform C++ framework for building desktop and mobile apps and VST, VST3, AU, AUv3, LV2 and AAX audio plug-ins and hosts.
A web-based PowerPoint-style presentation editor that replicates most common PowerPoint features and previews local PPTX files in the browser.
Open-source large language models and tooling for financial tasks such as sentiment analysis, forecasting, and robo-advisory.
Cross-platform .NET framework for building cloud-connected web, IoT, and mobile backend applications.
A PHP library for composing and sending email with SMTP, attachments, HTML bodies, and address validation.
A LuCI web-interface theme for OpenWrt routers that supports image or video login backgrounds and light/dark mode switching.
Cross-platform USB host and device stack in C for embedded systems, with no dynamic allocation and interrupts deferred to task context.
A C library implementing X.509 certificate handling and the TLS and DTLS protocols, with a small footprint for embedded systems.
Ruby framework for building AI features with a unified API across 23 model providers, tools, agents, and Rails conventions.
Official Java SDK for building Model Context Protocol servers and clients, maintained with the Spring AI team.
A declarative Go package for building command line tools with commands, flags, and shell completion.
A Zig inference framework that compiles ML models through MLIR and OpenXLA to run on NVIDIA, AMD, Intel, TPU, and Trainium hardware.
Phoenix is a web framework for Elixir for building HTTP APIs, server-rendered apps, and realtime features.
An open-source storage framework for building Lakehouse architectures with ACID tables accessible from Spark, Flink, Trino, Presto, and Hive.
Unit testing framework for PHP, implementing the xUnit architecture.
A pure PHP library for reading and writing spreadsheet files such as Excel, LibreOffice Calc, and ODS formats.