Top Open Source Projects using Anthropic
A curated collection of the 37 best free and open-source projects built using Anthropic. Discover popular repositories, architecture patterns, and trending software in 2026.
Synara
MITDesktop coding workspace that connects to AI subscriptions you already have, with parallel agents, worktrees, one-click PRs, and multi-project management.
Spanlens
MITDrop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.
LiteLLM
NOASSERTIONActs as a unified proxy across 100+ LLMs, normalizing them to the OpenAI format while handling virtual keys, budgets, rate limits, fallbacks, and cost tracking.
Maxun
AGPL-3.0Turn any website into structured data using a visual recorder, natural language prompts, or API. Includes proxy rotation, scheduling, and webhook integrations.
Inngest
NOASSERTIONSimplify backend processes with event-driven functions, seamless integrations, and powerful debugging tools for developers.
Instant
Apache-2.0Instant is a database solution for building real-time and offline-enabled applications, simplifying the development of collaborative products.
Firecrawl
AGPL-3.0API for AI agents to search, scrape, crawl, and interact with the live web, returning clean Markdown, structured JSON, or screenshots from any page.
Windmill
NOASSERTIONPowerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.
Autumn
Apache-2.0Simplify Stripe integration for AI startups with 3 functions, 0 webhooks. Build pricing plans in 30 minutes with usage tracking, credits, and feature controls.
Tolaria
AGPL-3.0A free, open source note-taking app built on plain Markdown files, Git version control, and direct AI model integration. No account required.
ToolJet
AGPL-3.0Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface
Temps
Apache-2.0Self-hosted platform for small dev teams combining deployments, error tracking, analytics, session replay, uptime monitoring, and managed databases in one dashboard.
Superset
NOASSERTIONmacOS app that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.
screenpipe
NOASSERTIONRecords your screen and microphone locally, transcribes meetings automatically, and lets you query your entire work history with AI or automate workflows through app integrations.
Puter
AGPL-3.0Puter is a cloud-based desktop OS you run in the browser, with built-in apps, file storage, and support for hosting web apps and sites.
pi
MITTerminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.
Payload
MITA powerful, flexible, and developer-friendly content management system that prioritizes customization and scalability.
Paseo
NOASSERTIONSelf-hosted orchestrator for coding agents like Claude Code, Codex, and Cursor, controlled from phone, desktop, web, or CLI.
Paperclip
MITManages teams of AI agents across business functions with org charts, goal alignment, cost tracking, ticket tracing, and board-level governance controls.
OpenLIT
Apache-2.0Open-source observability platform for GenAI and LLM applications. Real-time monitoring, distributed tracing, prompt management, and AI model evaluation built on OpenTelemetry.
OpenClaw
NOASSERTIONA personal AI assistant that connects to your existing chat apps and handles real tasks like email, calendar, and flight check-ins on your behalf.
NanoClaw
MITSelf-hosted AI agent that connects to WhatsApp, Telegram, Slack, and a dozen more messaging apps, running each agent in an isolated Docker container with credential injection via a secure vault.
Mem0
Apache-2.0Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.
LobeChat
NOASSERTIONA collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.
Lightdash
NOASSERTIONSelf-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.
Kodus
NOASSERTIONOpen source AI code reviewer that analyzes pull requests for quality, security, and performance while respecting your existing rules and model preferences.
itsnotes
MITA self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.
Helicone
Apache-2.0Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.
GitButler
NOASSERTIONGitButler is a powerful Git client that enables seamless work on multiple branches concurrently, enhancing your existing workflow.
Ghost
MITPublish content, send email newsletters, and sell paid subscriptions from one platform. Used by independent journalists, creators, and businesses like YCombinator and Kickstarter.
Flowise AI
NOASSERTIONOpen source platform for building AI agents, chatbots, and multi-agent systems using a drag-and-drop interface, with support for 100+ LLMs and RAG.
Continue
Apache-2.0Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.
Cline
Apache-2.0AI coding agent that runs inside VS Code and the terminal, supporting multi-file edits, bash execution, and any LLM provider via bring-your-own-key.
Cherry Studio
AGPL-3.0Desktop AI client for Windows, macOS, and Linux that connects 300+ models from 50+ providers, with local storage, a built-in knowledge base, and autonomous agent mode.
AnythingLLM
MITA desktop and self-hostable AI app for chatting with documents, running local LLMs, and using AI agents without writing code or creating an account.
Agenta
NOASSERTIONOpen-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.
Ycode
MITBuild, manage, and host custom websites with a visual drag-and-drop builder and CMS. Self-host free or use managed cloud hosting.
