Top Open Source Projects using OpenAI
A curated collection of the 70 best free and open-source projects built using OpenAI. Discover popular repositories, architecture patterns, and trending software in 2026.
Zenblog
AGPL-3.0A minimalist, markdown-based blogging platform designed for developers, featuring syntax highlighting and seamless Git integration.
Chroma
Apache-2.0Open-source vector database designed for AI applications. Store, search, and retrieve embeddings with semantic similarity matching and metadata filtering.
UnKey
NOASSERTIONStreamline API authentication with UnKey's powerful, developer-friendly platform for creating, revoking, and monitoring API keys.
Spanlens
MITDrop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.
Papermark
NOASSERTIONSecure, customizable platform for sharing documents and tracking engagement. Perfect for sales teams, marketers, and businesses.
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.
Inbox Zero
NOASSERTIONAutomates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams.
Flowglad
NOASSERTIONConnects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
Contentport
AGPL-3.0Create, schedule & manage Twitter content at scale with AI assistance, beautiful visuals, and multi-account support. Perfect for busy founders.
WunderGraph
Apache-2.0A powerful backend framework that simplifies API integration, enhances security, and boosts developer productivity for modern web applications.
Windmill
NOASSERTIONPowerful, self-hosted platform for building and running workflows, scripts, and apps with code-first approach and collaborative features.
Typebot
NOASSERTIONDesign, build, and deploy interactive chatbots with a visual editor. Integrate easily and collect data effortlessly.
Typesense
GPL-3.0Open-source search solution offering blazing speed, typo tolerance, and effortless scalability for developers and businesses.
Abby
AGPL-3.0Open-source feature flags, remote config, and A/B testing for developers
Trigger
Apache-2.0Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Tabby
NOASSERTIONSelf-hosted AI coding assistant that enhances productivity with context-aware suggestions and privacy-focused implementation.
Spliit
MITA user-friendly app for tracking shared expenses, settling debts, and managing group finances with ease and transparency.
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.
Proxed AI
AGPL-3.0A secure proxy service that protects AI API keys using Apple DeviceCheck, enabling safe integration of ChatGPT, Claude, and other AI models in iOS apps
Postiz
AGPL-3.0Self-hostable social media scheduler that lets you plan, generate, and publish content across 30+ networks with AI assistance, team collaboration, and automation integrations.
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.
Paseo
NOASSERTIONSelf-hosted orchestrator for coding agents like Claude Code, Codex, and Cursor, controlled from phone, desktop, web, or CLI.
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.
OpenCode
MITOpen source AI coding agent that works in your terminal, IDE, or desktop app, supporting 75+ LLM providers with no code storage.
Onlook
Apache-2.0Onlook is an open-source desktop app that allows you to visually edit React applications and automatically write changes back to your code in real-time.
NocoDB
NOASSERTIONConvert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.
MDMA
MITMarkdown 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.
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.
Macro Tasks
AGPL-3.0Task manager built for engineering teams, combining status tracking, priority management, GitHub integration, and AI agents that can close tasks automatically.
Macro Mail
AGPL-3.0An AI-powered email client that combines inbox management, chat, tasks, and AI agents in one shared workspace, built for keyboard-driven workflows.
Macro Docs
AGPL-3.0Collaborative markdown documents with real-time CRDT editing, AI agent cursors, mention linking, and built-in properties tied to your tasks, channels, and email.
Macro CRM
AGPL-3.0Automatically creates and enriches contacts, companies, and deal threads from your team's email. No data entry, no imports, no admin overhead.
Macro Chat
AGPL-3.0Team chat app with inline threads, mention-based sharing, a unified inbox for chat and email, and an AI agent that works across your full workspace.
LobeChat
NOASSERTIONA collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.
Litlyx
Apache-2.0Track user behavior, custom events, and conversion funnels in real-time with a single line of code, all while maintaining GDPR compliance.
LLM Gateway
NOASSERTIONRoute, manage, and analyze LLM requests across multiple providers with one API. Compatible with OpenAI format, includes usage analytics and performance monitoring.
Linguist
BSD-3-ClauseFull-featured browser extension for translating web pages, text, and subtitles with offline mode, personal dictionary, and custom translator support.
LibreChat
MITChat with multiple AI providers through a single self-hostable interface, with support for custom agents, file uploads, plugins, and multi-user access control.
Kodus
NOASSERTIONOpen source AI code reviewer that analyzes pull requests for quality, security, and performance while respecting your existing rules and model preferences.
Keep
NOASSERTIONOpen-source platform for centralizing alerts, automating responses, and enhancing incident management across your tech stack.
Kilo
MITOpen source AI coding agent with 500+ models, bring-your-own-key support, and specialized modes for writing, debugging, and planning code across IDEs and CLI.
Jarvis
MITFree, open-source macOS voice assistant that transcribes speech, applies AI transformations, and controls apps hands-free. No subscription, no training required.
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.
HeyForm
AGPL-3.0A versatile form builder for crafting custom surveys, quizzes, and data collection tools with advanced features and integrations.
Helicone
Apache-2.0Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.
Grida
Apache-2.0Design and build web applications on an open canvas with AI-powered tools, Figma integration, pixel drawing, and a modular SDK built for extensibility.
GrowthBook
NOASSERTIONPowerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.
GitButler
NOASSERTIONGitButler is a powerful Git client that enables seamless work on multiple branches concurrently, enhancing your existing workflow.
Giselle
Apache-2.0Create powerful AI agents using an intuitive node-based interface that connects multiple LLMs and data sources for automated documentation and development workflows.
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.
FastGPT
NOASSERTIONFastGPT is a free, open-source platform for creating AI-powered knowledge bases with data processing, model invocation, and visual workflows.
Expensify
MITAutomate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.
dstack
MPL-2.0Unified control plane for AI compute that provisions and schedules GPU workloads across any cloud, Kubernetes cluster, or bare-metal server.
Deta Surf
Apache-2.0A browser that doubles as a personal notebook, letting you research, summarize, and take notes on web pages, PDFs, and videos without switching apps.
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.
ClassroomIO
AGPL-3.0Open source LMS designed for companies and training organizations. Create, manage, and deliver courses with AI support, customizable dashboards, and collaborative features.
Chartbrew
NOASSERTIONA powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.
Changes.Page
AGPL-3.0Automate and simplify changelog generation from Git commits, ensuring clear and consistent project documentation.
Budibase
NOASSERTIONLow-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.
Blinko
GPL-3.0The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.
Ballerine
NOASSERTIONReduce fraud, accelerate underwriting, and maintain compliance with AI-driven merchant risk intelligence for PSPs, banks, and fintechs.
Arize Phoenix
NOASSERTIONOpen-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
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.
AppSmith
Apache-2.0Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.
Amical
MITOpen source AI dictation app that transforms speech to text with context-aware formatting. Fast, accurate transcription for meetings, notes, and hands-free typing.
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.
Supabase
Apache-2.0Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.
