Open-source plugins that specialize Claude for knowledge-work roles like sales, legal, finance, and support, for use in Claude Cowork.
OpenUI is a framework-agnostic Generative UI framework with a streaming-first language for rendering model-generated interfaces.
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.
Rust GUI component library and framework for building cross-platform desktop apps on the GPUI rendering engine.
A React framework for building full-stack web applications with server rendering, static generation, and routing.
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.
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.
A library of model optimization techniques (quantization, pruning, distillation, NAS, speculative decoding, sparsity) that exports compressed checkpoints for inference frameworks.
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.
Open-source framework and toolkit of container components created by Docker for assembling custom container-based systems.
TypeScript library for building type-safe production applications with typed errors, dependency injection, structured concurrency, and schema validation.
Framework for building native Android, iOS, and other platform apps using React and JavaScript.
A neural network from OpenAI that scores how well text snippets match images, trained on image-text pairs for zero-shot prediction.
Software update framework for macOS apps, supporting EdDSA-signed updates, delta patches, and sandboxed apps.
A configuration framework for GNU Emacs with curated defaults, modular config, and Evil (Vim) keybindings.
Java workflow engine that executes BPMN processes, CMMN cases, and DMN decision rules, embeddable or runnable as a server.
A PHP framework and set of reusable components for building web and console applications.
Cross-platform C++ framework for building desktop and mobile apps and VST, VST3, AU, AUv3, LV2 and AAX audio plug-ins and hosts.
Core code of the Laravel PHP web application framework, providing routing, dependency injection, ORM, queues, and more.
Ruby web application framework implementing MVC with ActiveRecord, ActionView, ActionController, and related libraries for database-backed apps.
Cross-platform .NET framework for building cloud-connected web, IoT, and mobile backend applications.
Ruby framework for building AI features with a unified API across 23 model providers, tools, agents, and Rails conventions.
Lightweight neural network inference framework for running AI models on Espressif ESP series chips.
A Zig inference framework that compiles ML models through MLIR and OpenXLA to run on NVIDIA, AMD, Intel, TPU, and Trainium hardware.
Theming framework that applies color schemes, wallpapers, and fonts across NixOS, Home Manager, nix-darwin, and Nix-on-Droid.
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.
Async I/O runtime for Zig that schedules lightweight coroutines across OS threads and implements the std.Io interface.
Unit testing framework for PHP, implementing the xUnit architecture.
Foundational Java framework providing dependency injection, web MVC, data access, and other infrastructure for enterprise applications.
A full-stack framework for Laravel that builds dynamic, reactive UI components without writing JavaScript.
Swift library for HTTP networking built on URLSession, offering chainable requests, parameter encoding, and response validation.
A mod loader and API framework for the game Balatro, written in Lua on the LΓVE engine.
LaTeX/TikZ code for drawing neural network architecture diagrams for reports and presentations.
Declarative Elixir framework for defining resources, actions, and policies that generate APIs, queries, and business logic.
Solidity smart contracts for Across, a cross-chain token bridge with a HubPool on Ethereum and SpokePools on other networks.
Perl web framework with a built-in non-blocking HTTP/WebSocket server and client, plus MVC, routing, templates, and JSON/HTML parsing.
A CSS framework built on Flexbox that provides styled components and layout classes with no bundled JavaScript.
Opinionated framework for building production-ready, standalone Spring applications with minimal configuration.