Open Source Projects using MCP
A curated collection of the 82 best open source software using MCP. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Open-source LLM tracing & evaluation for AI optimization
Stars
11,156Last commit
1 hour 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:
Build product integrations with 500+ APIs in hours
Stars
11,571Last commit
6 hours agoLicense
Elastic-2.0
Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.
Open Source Alternative to:
Realtime client-side database for collaborative apps
Stars
10,476Last commit
2 days agoLicense
Apache-2.0
Instant is a database solution for building real-time and offline-enabled applications, simplifying the development of collaborative products.
Open Source Alternative to:
Modern payment infrastructure for digital products and SaaS
Stars
10,212Last commit
44 minutes 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
7,956Last commit
15 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:
Ultra-fast AI gateway with enterprise-grade reliability
Stars
7,525Last commit
5 hours agoLicense
Apache-2.0
Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.
Open Source Alternative to:
Modular auth, payments, emails, and analytics for your product
Stars
6,843Last commit
1 hour agoLicense
Unknown
Self-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
Open Source Alternative to:
Comprehensive monitoring and incident management platform
Stars
7,506Last commit
5 hours agoLicense
Apache-2.0
All-in-one solution for uptime monitoring, incident management, and status pages to keep your services running smoothly
Open Source Alternative to:
Open-source cloud communications platform for developers
Stars
8,080Last commit
3 hours 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:
Automated translations that scale with your code and commits
Stars
5,406Last commit
3 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:
Smart desktop AI assistant with powerful local knowledge features
Stars
5,342Last commit
1 month agoLicense
Unknown
Cross-platform desktop AI assistant supporting multiple providers, local knowledge base, and custom prompts. Integrates MCP protocol for enhanced AI tool capabilities.
Open Source Alternative to:
Enterprise workplace AI with data you own and control
Stars
3,675Last commit
22 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:
Comprehensive open-source business management platform
Stars
4,346Last commit
8 hours agoLicense
AGPL-3.0
All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations
Open Source Alternative to:
Python, SQL, and AI in a collaborative data notebook
Stars
2,999Last commit
6 hours agoLicense
Apache-2.0
Deepnote is an open-source collaborative notebook for data analysts and scientists, combining Python, SQL, AI assistance, and live sharing in one cloud platform.
Open Source Alternative to:
Self-hosted home automation without the cloud
Stars
3,155Last commit
3 days agoLicense
Apache-2.0
Privacy-first home automation platform that runs locally on your hardware, supports Zigbee, Matter, and MQTT, and lets you automate your home without coding.
Open Source Alternative to:
Complete IT infrastructure monitoring made simple
Stars
2,348Last commit
13 hours agoLicense
GPL-2.0
Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.
Open Source Alternative to:
AI-native CRM/ERP foundation with 80% already built
Stars
1,675Last commit
2 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:
Local meeting recorder that keeps your audio off the cloud
Stars
1,447Last commit
2 hours agoLicense
MIT
Records meetings and voice memos locally using whisper.cpp, writes structured markdown to disk, and exposes 31 MCP tools so any AI agent can query your conversation history.
Open Source Alternative to:
Unified API for all LLM providers with analytics
Stars
1,566Last commit
7 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:
Cross-system automation and knowledge base for accounting firms
Stars
1,718Last commit
3 months agoLicense
Unknown
Connects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
AI code review that learns your team's standards
Stars
1,321Last commit
2 hours agoLicense
AGPL-3.0
Open source AI code reviewer that analyzes pull requests for quality, security, and performance while respecting your existing rules and model preferences.
Open Source Alternative to:
Privacy-first analytics without cookies or tracking
Stars
1,136Last commit
17 hours agoLicense
AGPL-3.0
Get powerful web analytics with zero cookies, 100% GDPR compliance, and full data ownership. Lightweight 3KB script delivers real-time insights without compromising user privacy.
Open Source Alternative to:
Unify APIs, databases, and services effortlessly
Stars
1,253Last commit
18 hours agoLicense
Apache-2.0
A powerful backend framework that simplifies API integration, enhances security, and boosts developer productivity for modern web applications.
Open Source Alternative to:
AI agent workflows built natively into GitHub
Stars
1,041Last commit
6 days agoLicense
MIT
An open-source GitHub bot that runs AI agents to review PRs, triage issues, fix CI failures, and ship code using any LLM provider.
Open Source Alternative to:
Dictate faster and control your Mac with voice
Stars
619Last commit
3 days agoLicense
MIT
Free, open-source macOS voice assistant that transcribes speech, applies AI transformations, and controls apps hands-free. No subscription, no training required.
Open Source Alternative to:
One self-hosted binary replaces Vercel, Sentry, and analytics tools
Stars
672Last commit
3 hours agoLicense
Apache-2.0
Self-hosted platform for small dev teams combining deployments, error tracking, analytics, session replay, uptime monitoring, and managed databases in one dashboard.
Open Source Alternative to:
Visual website builder and CMS you can self-host
Stars
279Last commit
4 days agoLicense
MIT
Build, manage, and host custom websites with a visual drag-and-drop builder and CMS. Self-host free or use managed cloud hosting.
Open Source Alternative to:
Inspect, debug, and replay BullMQ queues visually
Stars
434Last commit
3 months agoLicense
MIT
Desktop app and embeddable dashboard for BullMQ that shows live queue metrics, job runs, FlowProducer graphs, and scheduler status without touching Redis directly.
Open Source Alternative to:
Self-hosted AI coding agent that opens real PRs
Stars
201Last commit
1 hour agoLicense
FCL-1.0
Source-available, self-hosted AI coding agent that connects to your repo, tools, and chat to investigate issues and open reviewable PRs on your own infrastructure.
Open Source Alternative to:
Transform idle cash into competitive yield for startups
Stars
249Last commit
5 months agoLicense
MIT
High-yield treasury management for startups earning 8% APY with insurance coverage up to $1M. Open US/EU accounts instantly with full liquidity and no minimums.
Privacy-first, cookieless analytics without consent banners
Stars
174Last commit
10 hours agoLicense
AGPL-3.0
GDPR-compliant web analytics with real-time insights, session replay, and funnel tracking. No cookies, no tracking, no consent banners required.
Open Source Alternative to:
Transform documentation with developer-focused simplicity
Stars
113Last commit
4 hours agoLicense
MIT
Create powerful, interactive documentation with hot reloading, TypeScript support, custom components, and built-in API docs generation.
Open Source Alternative to:
Lightweight, accessible product tours built for React developers
Stars
61Last commit
2 months agoLicense
MIT
Headless React tour library with WCAG 2.1 AA accessibility, TypeScript support, and pre-styled components. Under 8KB gzipped with full customization control.
Open Source Alternative to:
Self-hosted CRM for business development teams
Stars
74Last commit
2 days agoLicense
MIT
Pipeline management, deal workspace, contacts, and two-way Gmail for BD teams. Runs on your own infrastructure, MIT licensed, no per-seat fees.
Open Source Alternative to:
Ship features while you sleep with autonomous AI agents
Stars
74Last commit
2 months agoLicense
Apache-2.0
Deploy AI agents that build features, fix bugs, and handle complex workflows overnight. Wake up to tested code and ready-to-review pull requests.
Open Source Alternative to:
Markdown that mounts real applications
Stars
64Last commit
14 days agoLicense
MIT
Markdown Document with Mounted Applications, the open-source format that turns AI responses into interactive documents. Forms, tables, approval gates and charts render straight from the chat, no custom UI per use case.
Open Source Alternative to:
Turn user feedback into features that matter
Stars
33Last commit
6 hours agoLicense
SSPL-1.0
Collect feedback, prioritize with AI-powered voting, and share transparent roadmaps. Build products users love with automated triage and seamless integration.
Open Source Alternative to:
Self-hosted sticky notes with better organization
Stars
30Last commit
24 days agoLicense
MIT
A self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.
Open Source Alternative to:
AI-powered task management with radical focus
Stars
26Last commit
5 months agoLicense
AGPL-3.0
Open source minimalist task management tool with AI companion that filters noise, automates coordination, and guides teams through complexity with calm focus.
Open Source Alternative to:
LLM observability: cost, latency, and traces in one place
Stars
12Last commit
1 hour agoLicense
MIT
Drop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.
Open Source Alternative to:
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