Open Source Projects using Anthropic
A curated collection of the 108 best open source software using Anthropic. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Automate workflows with no-code integration platform
Stars
24,027Last commit
12 hours agoLicense
MIT
Open-source integration platform for seamless workflow automation. Connect apps, automate tasks, and boost productivity effortlessly.
Open Source Alternative to:
Build unlimited AI apps locally with zero vendor lock-in
Stars
21,314Last commit
18 hours agoLicense
Apache-2.0
Create full-stack AI applications using any model or tool. Run entirely on your machine with complete privacy, flexibility, and control over your code.
Open Source Alternative to:
AI agent that autonomously handles real-world tasks
Stars
20,138Last commit
16 hours agoLicense
Apache-2.0
Open source AI assistant that executes complex tasks from market research to travel planning through natural conversation, with full transparency and community-driven development.
Open Source Alternative to:
Build powerful web apps without complex coding
Stars
28,243Last commit
22 hours agoLicense
Unknown
Low-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.
Open Source Alternative to:
Automate any website workflow with AI and computer vision
Stars
22,842Last commit
18 hours agoLicense
AGPL-3.0
Transform manual browser tasks into automated workflows using AI. Handle complex forms, CAPTCHAs, 2FA, and data extraction across any website at scale.
Open Source Alternative to:
Local-first, Git-native personal knowledge base with AI
Stars
19,577Last commit
1 day agoLicense
AGPL-3.0
A free, open source note-taking app built on plain Markdown files, Git version control, and direct AI model integration. No account required.
Open Source Alternative to:
24/7 screen and audio recorder with AI memory search
Stars
21,208Last commit
16 hours agoLicense
MIT
Records your screen and microphone locally, transcribes meetings automatically, and lets you query your entire work history with AI or automate workflows through app integrations.
Open Source Alternative to:
Flexible database meets intuitive spreadsheet interface
Stars
21,710Last commit
13 hours agoLicense
AGPL-3.0
Open-source platform combining powerful database capabilities with a user-friendly spreadsheet interface for efficient data management and collaboration.
Open Source Alternative to:
Revolutionize your Git workflow with simultaneous branches
Stars
21,564Last commit
14 hours agoLicense
FSL-1.1-MIT
GitButler is a powerful Git client that enables seamless work on multiple branches concurrently, enhancing your existing workflow.
Open Source Alternative to:
Run coding agents from your phone, desktop, or terminal
Stars
14,952Last commit
16 hours agoLicense
AGPL-3.0
Self-hosted orchestrator for coding agents like Claude Code, Codex, and Cursor, controlled from phone, desktop, web, or CLI.
Open Source Alternative to:
Collaborative bookmark manager for teams and individuals
Stars
19,590Last commit
5 days agoLicense
AGPL-3.0
Open-source platform to collect, organize, and preserve webpages with powerful collaboration features
Open Source Alternative to:
Run dozens of AI coding agents in parallel on your machine
Stars
13,324Last commit
12 hours agoLicense
Elastic-2.0
macOS app that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.
Open Source Alternative to:
Run long-running AI tasks without timeouts or servers
Stars
16,110Last commit
16 hours agoLicense
Apache-2.0
Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Open Source Alternative to:
Minimalistic AI-powered search engine for instant answers
Stars
11,849Last commit
13 days agoLicense
AGPL-3.0
Scira delivers concise, AI-generated responses to queries using a clean interface and powerful search capabilities.
Open Source Alternative to:
Build powerful AI agents with cutting-edge LLM technology
Stars
14,879Last commit
1 day agoLicense
MIT
A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.
Open Source Alternative to:
Ultra-fast data transformation for AI with lineage
Stars
11,401Last commit
19 hours agoLicense
Apache-2.0
Open-source ETL framework built in Rust for AI workloads. Features incremental processing, data lineage, and observability tools for semantic search and RAG applications.
Open Source Alternative to:
Create powerful chatbots without coding
Stars
10,285Last commit
1 day agoLicense
Unknown
Design, build, and deploy interactive chatbots with a visual editor. Integrate easily and collect data effortlessly.
Open Source Alternative to:
AI-Powered Note Taking App
Stars
10,952Last commit
22 days agoLicense
GPL-3.0
The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.
Open Source Alternative to:
Open-source LLM tracing & evaluation for AI optimization
Stars
11,174Last commit
12 hours agoLicense
Elastic-2.0
Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
Open Source Alternative to:
AI-powered answer engine with dynamic interface generation
Stars
9,060Last commit
12 hours agoLicense
Apache-2.0
Open-source answer engine that dynamically generates UI components while providing AI-powered responses, combining conversational AI with interactive interfaces.
Open Source Alternative to:
Modern payment infrastructure for digital products and SaaS
Stars
10,212Last commit
20 hours agoLicense
Apache-2.0
Comprehensive payment solution with built-in tax handling, automated benefits, and seamless integrations for digital product and SaaS businesses.
Open Source Alternative to:
Design editor that opens Figma files, runs AI, and stays local
Stars
7,978Last commit
17 hours agoLicense
MIT
A Figma-compatible design editor with built-in AI chat, headless CLI, real-time P2P collaboration, and a Vue SDK for building custom editors. No account needed.
Open Source Alternative to:
Voice-to-text that works offline, privately, on any app
Stars
5,710Last commit
14 hours agoLicense
MIT
Dictation app powered by OpenAI Whisper and NVIDIA Parakeet. Runs locally on macOS, Windows, and Linux with zero data retention and 100+ language support.
Open Source Alternative to:
Open-source cloud communications platform for developers
Stars
8,082Last commit
2 days agoLicense
MIT
Build and deploy powerful voice and messaging applications with ease using Fonoster's flexible, scalable, and developer-friendly platform.
Open Source Alternative to:
Build reliable AI apps with comprehensive observability
Stars
6,099Last commit
19 hours agoLicense
Apache-2.0
Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.
Open Source Alternative to:
Open-source legal AI that law firms control and extend
Stars
4,152Last commit
12 hours agoLicense
AGPL-3.0
Self-hostable alternative to Harvey and Legora with document analysis, contract drafting, tabular review, and reusable workflows. Zero licensing costs, full data control.
Open Source Alternative to:
Build stateful backends with in-memory actors
Stars
6,085Last commit
15 hours agoLicense
Apache-2.0
Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.
Open Source Alternative to:
Automated translations that scale with your code and commits
Stars
5,408Last commit
5 days agoLicense
Apache-2.0
Transform your app into a global product with AI-powered localization that integrates directly into your development workflow. Supports 83+ languages with Git-native automation.
Open Source Alternative to:
Open-source BI for modern data teams
Stars
6,075Last commit
14 hours agoLicense
MIT
Self-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.
Open Source Alternative to:
Build reliable AI agents with unified tool integration
Stars
4,884Last commit
3 months agoLicense
Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server
Open Source Alternative to:
Build reliable LLM apps with integrated workflows
Stars
4,528Last commit
18 hours agoLicense
MIT
Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.
Open Source Alternative to:
Enterprise workplace AI with data you own and control
Stars
3,679Last commit
12 hours agoLicense
Apache-2.0
Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.
Open Source Alternative to:
AI-powered platform for engineering LLM products
Stars
3,191Last commit
1 day agoLicense
Apache-2.0
Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.
Open Source Alternative to:
Stripe payments, usage tracking, and paywalls in 3 functions
Stars
2,647Last commit
19 hours agoLicense
Apache-2.0
Simplify Stripe integration for AI startups with 3 functions, 0 webhooks. Build pricing plans in 30 minutes with usage tracking, credits, and feature controls.
Open Source Alternative to:
Monitor, debug, and scale LLM applications with ease
Stars
2,716Last commit
21 hours agoLicense
Apache-2.0
Open-source observability platform for GenAI and LLM applications. Real-time monitoring, distributed tracing, prompt management, and AI model evaluation built on OpenTelemetry.
Open Source Alternative to:
Self-hosted email platform with visual editor & analytics
Stars
2,073Last commit
20 hours agoLicense
AGPL-3.0
Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.
Open Source Alternative to:
Route GenAI traffic with confidence using open source
Stars
1,953Last commit
23 hours agoLicense
Apache-2.0
Open source gateway built on Envoy for routing application traffic to GenAI services. Supports 16+ LLM providers including OpenAI, Anthropic, AWS Bedrock.
Open Source Alternative to:
AI-native CRM/ERP foundation with 80% already built
Stars
1,680Last commit
12 hours agoLicense
MIT
A modular CRM/ERP framework built on Next.js and TypeScript that encodes hundreds of architectural decisions so dev teams can ship production features in days, not months.
Open Source Alternative to:
Code with Claude, Codex, Gemini, and more in one workspace
Stars
1,594Last commit
5 days agoLicense
MIT
Desktop coding workspace that connects to AI subscriptions you already have, with parallel agents, worktrees, one-click PRs, and multi-project management.
Open Source Alternative to:
Unified API for all LLM providers with analytics
Stars
1,570Last commit
14 hours agoLicense
MIT
Route, manage, and analyze LLM requests across multiple providers with one API. Compatible with OpenAI format, includes usage analytics and performance monitoring.
Open Source Alternative to:
Managed identity and access management for any app
Stars
2,003Last commit
2 days agoLicense
Apache-2.0
Authgear is a managed IAM platform handling authentication, SSO, and user management for B2C and B2B apps, with biometrics, MFA, and zero-trust support.
Open Source Alternative to:
AI-powered PostgreSQL management made simple
Stars
1,435Last commit
21 hours agoLicense
AGPL-3.0
Modern PostgreSQL database management with AI-powered filtering, natural language queries, and cloud sync. Focus on your data while AI handles complexity.
Open Source Alternative to:
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