Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise. Learn more →
Top 23 Cursor Open-Source Projects
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system-prompts-and-models-of-ai-tools
FULL Augment Code, Claude Code, Cluely, CodeBuddy, Comet, Cursor, Devin AI, Junie, Kiro, Leap.new, Lovable, Manus, NotionAI, Orchids.app, Perplexity, Poke, Qoder, Replit, Same.dev, Trae, Traycer AI, VSCode Agent, Warp.dev, Windsurf, Xcode, Z.ai Code, Dia & v0. (And other Open Sourced) System Prompts, Internal Tools & AI Models
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AppSignal
AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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Monitor the agent-skills and superpowers repos for production-grade patterns worth adopting.
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Agent-Reach
Give your AI agent eyes to see the entire internet. Read & search Twitter, Reddit, YouTube, GitHub, Bilibili, XiaoHongShu — one CLI, zero API fees.
Project mention: ถ้าต้องล้าง Hermes แล้วเริ่มใหม่, ชุด 19 Skills ที่ควรติดตั้งก่อนอื่น | dev.to | 2026-09-07[2] Panniantong/Agent-Reach, GitHub (2026), https://github.com/Panniantong/Agent-Reach
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headroom
Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.
Project mention: Headroom: Save Tokens from Reversible Compression | news.ycombinator.com | 2026-09-04 -
oh-my-openagent
OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering.
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OpenMontage
World's first open-source, agentic video production system. 12 production pipelines, 100+ tools, 700+ agent skill and production-knowledge files. Turn your AI coding assistant into a full video production studio.
Project mention: Open Source Highlights September 2026: 7 Projects You Should Know | dev.to | 2026-09-19github.com/calesthio/OpenMontage
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codebase-memory-mcp
High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries, 99% fewer tokens. Single static binary, zero dependencies.
Project mention: Google's Ax and Anthropic's Financial Services Are Trending — But Who Solves Long-Running Workflow Resilience? | dev.to | 2026-09-23DeusData/codebase-memory-mcp indexes codebases into a persistent knowledge graph. It solves the "context loss" problem in long-running agent tasks — agents don't have to re-read the entire codebase every time.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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awesome-cursorrules
📄 Configuration files that enhance Cursor AI editor experience with custom rules and behaviors
We ended up building one and took a few inspirations from online Github repositories, https://github.com/PatrickJS/awesome-cursorrules
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agents
Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, Google Antigravity, and Pi
Project mention: Skills Sprawl: When Too Much of a Good Thing Confuses Your AI Agent | dev.to | 2026-08-17Specialised & Community Skills: Niche skills sourced from specific community repositories, including wshobson/agents (documentation-and-adrs, interview-me), coreyhaines31/marketingskills (seo-audit), remotion-dev/skills (remotion-best-practices), and vercel-labs/skills (find-skills).
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claude-task-master
An AI-powered task-management system you can drop into Cursor, Lovable, Windsurf, Roo, and others.
Project mention: TaskMaster (26K) captures 100% of prompts and responses, sendDefaultPii:true | news.ycombinator.com | 2026-04-04 -
onlook
The Developer Tool for Designers • An Open-Source AI-First Design tool • Visually build, style, and edit your code with AI • World's best, top-most agent recommended #1 Developer tool for Designers to design with Real Code.
Project mention: Loupe VS onlook - a user suggested alternative | libhunt.com/r/winchxyz/loupe | 2026-07-22Onlook is a visual editor for existing React/Tailwind codebases; Loupe builds the site from a prompt and verifies every AI edit against the real render, with hand editing on the live page.
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go-cursor-help
解决Cursor在免费订阅期间出现以下提示的问题: Your request has been blocked as our system has detected suspicious activity / You've reached your trial request limit. / Too many free trial accounts used on this machine.
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Happy Coder
Mobile and Web client for Claude Code. Spawn and control multiple Claude Codes in parallel. Happy Coder runs on your hardware. Works seamlessly with your existing tools and workflow. Secure with end-to-end encryption. Hands-free control with voice agent - not just dictation.
Project mention: Happy — The Open-Source App That Puts Claude Code in Your Pocket | dev.to | 2026-04-15Code on GitHub. Live app at happy.engineering. More posts at radarlog.kr.
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opcode
A powerful GUI app and Toolkit for Claude Code - Create custom agents, manage interactive Claude Code sessions, run secure background agents, and more.
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Worth reading alongside these: agentmemory#648, a stability pass where two separate bugs turned out to share one root cause — a daemon wrapper surviving stop — and the dawnai memory-tooling commit, which adds a gated live-smoke suite for exactly the reason I am writing this post: some behaviors only appear against a real backend, so they gate a separate suite on a real key and keep it out of CI.
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It's convenient to place the rules in a separate directory. For example, create a .cursor folder in the project root and put all rules inside a rules folder within it. Be sure to give the AI agent a link to the rules. Here's also an example of a detailed set of rules from another project configured with Framelink MCP:
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unity-mcp
Unity MCP acts as a bridge between AI assistants and your Unity Editor. Give your LLM tools to manage assets, control scenes, edit scripts, and automate tasks within Unity.
Project mention: Unity MCP: Bridging AI Assistants with Unity for Automated Game Development | dev.to | 2026-07-05The protocol facilitates communication between various MCP clients (e.g., Claude Desktop & Code, Cursor, VS Code, Gemini CLI) and the Unity Editor. Installation is achieved via Unity's Package Manager, by adding the GitHub URL https://github.com/CoplayDev/unity-mcp.git?path=/MCPForUnity#main or through OpenUPM. The system requires Unity 2021.3 LTS or newer and Python 3.10+ (managed via uv).
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claude-context
Code search MCP for Claude Code. Make entire codebase the context for any coding agent.
Claude Code doesn't do anything with semantic search or embeddings out of the box. They use a simple grep tool instead.
Neither does OpenAI's Codex CLI - you can confirm that by looking at the source code https://github.com/openai/codex
Cursor and Windsurf both use semantic search via embeddings.
You can get semantic search in Claude Code using this unofficial plugin: https://github.com/zilliztech/claude-context
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git-mcp
Put an end to code hallucinations! GitMCP is a free, open-source, remote MCP server for any GitHub project
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gentle-ai
Gentle-AI configures the AI coding agents you already use: Claude Code, Cursor, OpenCode, Codex, Pi, and more. Choose persistent memory, Organic-Driven Development, curated skills, MCP servers, personas, and optional bounded review. Open source, no agent lock-in.
One that caught my attention is Gentle AI by Gentleman Programming. It's an ecosystem configurator that transforms AI coding agents into comprehensive development systems. It takes a different approach to SDD: instead of one AI doing everything, it delegates to specialized sub-agents for each phase — explore, specify, design, implement, verify. One command sets up the entire workflow, and it pairs perfectly with SpecKit Companion's visual interface.
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refly
The first open-source agent skills builder. Define skills by vibe workflow, run on Claude Code, Cursor, Codex & more. Build Clawdbot 🦞· APIs for Lovable · Bots for Slack & Lark/Feishu · Skills are infrastructure, not prompts.
Inspired by BulletProof React, I applied its codebase architecture concepts to the Refly codebase.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Cursor discussion
Cursor related posts
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Your Repo Has Tests. Can Your AI Agent Find the Command?
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I tested whether Claude Code follows decisions from earlier chats
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Cubicle v0.21: my AI-agent office now asks me things (and I can answer from Telegram)
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Show HN: RepoGuard – Fast Architecture Guardrails for Claude and Cursor via MCP
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Claude Code Mods Just Turned Agents Into a Platform
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How to Stop Cursor and Claude Code from Breaking Clean Architecture in 12ms published: true
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Show HN: RepoGuard – Architecture linter for AI-generated code (Cursor, Claude)
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A note from our sponsor - AppSignal
www.appsignal.com | 5 Oct 2026
Index
What are some of the best open-source Cursor projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | system-prompts-and-models-of-ai-tools | 144,013 |
| 2 | agent-skills | 100,418 |
| 3 | Agent-Reach | 85,988 |
| 4 | headroom | 74,438 |
| 5 | oh-my-openagent | 69,743 |
| 6 | OpenMontage | 62,285 |
| 7 | codebase-memory-mcp | 45,671 |
| 8 | awesome-cursorrules | 40,872 |
| 9 | agents | 40,180 |
| 10 | claude-task-master | 28,136 |
| 11 | onlook | 26,849 |
| 12 | go-cursor-help | 26,126 |
| 13 | Happy Coder | 23,999 |
| 14 | opcode | 22,415 |
| 15 | agentmemory | 20,972 |
| 16 | Figma-Context-MCP | 15,940 |
| 17 | unity-mcp | 14,673 |
| 18 | claude-context | 12,587 |
| 19 | fastapi_mcp | 12,013 |
| 20 | git-mcp | 8,449 |
| 21 | gentle-ai | 7,548 |
| 22 | refly | 7,534 |
| 23 | browser-tools-mcp | 7,329 |
Sponsored
AppSignal knows why the f*#k it crashed.
Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
www.appsignal.com