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Top 23 Copilot 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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Project mention: Spec-Driven Development in React Native: an MVP that lists the world's earthquakes, specified before writing code | dev.to | 2026-09-05
# Installs the flow in the project and picks the agent you are going to use. uvx --from git+https://github.com/github/spec-kit.git specify init quakes-app # From there, inside the agent: # /constitution → project principles (apply to every feature) # /specify → this feature's specification # /clarify → resolves the ambiguities flagged in the spec # /plan → the technical plan # /tasks → the task breakdown # /implement → executes the tasks
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ui-ux-pro-max-skill
An AI skill that provides design intelligence for building professional UI/UX across multiple platforms.
Project mention: Developers are installing taste: 4 of today's 7 fastest-rising Claude Code skill searches are design skills | dev.to | 2026-08-12Ui Ux Pro Max by nextlevelbuilder, 311,742 installs. Details | GitHub
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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: An open-source 'AI crew' that turns a coding assistant into a video studio | dev.to | 2026-07-01The project's goal, stated plainly on its project page, is to be the 'world's first open-source, agentic video production system.' Stripped of the buzzwords, that means two things. 'Open-source' means anyone can read, run, and change the code for free, rather than paying a company for a locked product. 'Agentic' means it is built around AI agents, software workers that do not just answer a single question but take on a goal, break it into steps, use tools, and carry the steps out with limited hand-holding. OpenMontage ships with twelve pipelines (start-to-finish recipes for common production jobs), fifty-two tools the agents can pick up and use, and more than five hundred skills, small bundles of instructions that teach an agent how to do a specific task well.
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Project mention: CLI to manage your SQL database schemas and migrations | news.ycombinator.com | 2025-11-01
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agents
Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, and Google Antigravity
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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Kargo
Stop Scripting Promotions. Start Shipping with Kargo. Kargo automates promotion across dev, staging, and prod with approval gates and verification. Open source, built by the team behind Argo CD. Download now.
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CopilotKit
The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol
Project mention: Show HN: The Channels SDK – Bring Any Agent to Any Channel (Slack, MS Teams) | news.ycombinator.com | 2026-08-06Not necessarily wrong, but that's just a maturity problem on our end right now. We're aiming to take the same approach as our web SDKs: it works great for open-source deployments and works even better with Enterprise Intelligence. We had some back-and-forth over webhook vs. WebSocket in the last two weeks that caused some churn on our side.
If you point your agent at our SDKs, they should help you use the Slack or Teams adapters directly without leveraging the hosted service: https://github.com/CopilotKit/CopilotKit/tree/main/packages/...
Delivering AG-UI with generative UI to Slack and Teams should work great with the open-source packages. We'll make these interfaces better and more intuitive.
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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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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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Project mention: Docker Sandboxes – Disposable, isolated sandboxes for AI agents | news.ycombinator.com | 2026-08-09
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The issue is the update license is different than full install licenses, and the red sticker oem licenses people scam are hardware specific.
You usually must pay for windows twice (or more if you don't know) to be Pro license compliant for commercial use.
Setting a machine up for multi-boot Linux/BSD is not always a simple process with every BIOS firmware, and configuring Windows to stop automatic encryption of NTFS volumes is nontrivial. Even with an offline install for games, if the OneDrive account is ever activated... files are upped to Microsoft cloud anyway.
Thankfully, disarming Win11 TPM/Drive-boobytrap/BS-encryption/Spam is easy with Rufus, O&O ShutUp10, and Copilot removal (note undocumented AI API areas suggested RAT/snitch-ware... the final straw with Microsoft BS around here...)
https://github.com/pbatard/rufus
https://www.oo-software.com/en/shutup10
https://github.com/zoicware/RemoveWindowsAI
Yes it still supports DRM Steam games, and Win11 x4 gen4 SSDs are now about 17% faster i/o on my rig.
You know what I like about Apple OS, is you just flip around 8 options and it goes quiet.
Best of luck, ymmv =3
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GitHub Link: https://github.com/assistant-ui/assistant-ui
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Project mention: 🚀 Stop drowning in Tabs: Meet Noi, the Open Source Browser Built for AI | dev.to | 2026-01-08
Noi is cross-platform (macOS, Windows, Linux). You can grab the latest release from the GitHub Releases page, or if you are a Homebrew fan on Mac:
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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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Mastering-GitHub-Copilot-for-Paired-Programming
A multi-module course teaching everything you need to know about using GitHub Copilot as an AI Peer Programming resource.
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Project mention: Agent Client Protocol (ACP): Connect Any AI Agent to Any Editor | dev.to | 2026-06-04
Neovim support comes through community plugins like CodeCompanion.nvim and avante.nvim. The config follows the same pattern: a command path, args, and environment variables. Neovim spawns the agent as a subprocess and pipes JSON-RPC over stdio, same as the other editors.
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9router
Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Auto-fallback, RTK -40% tokens, never hit limits.
Project mention: Exporting ANTHROPIC_BASE_URL does not reach the Claude Code panel in VSCode | dev.to | 2026-08-15The endpoint is a 9Router instance, whose Anthropic-compatible /v1/messages fronts a long list of providers. The toolkit hard-codes none of them; it reads a gitignored local file:
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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).
Copilot discussion
Copilot related posts
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Spec-Driven Development in React Native: an MVP that lists the world's earthquakes, specified before writing code
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Spec-Driven Development en React Native: un MVP que lista los sismos del mundo, especificado antes de escribir código
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I spent 3.8 million tokens finding which service to change
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Show HN: Huzzah – a novel approach to coding with AI
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react-native-paper-onboarding VS react-native-tour-guide - a user suggested alternative
2 projects | 20 Aug 2026 -
react-native-onboarding-swiper VS react-native-tour-guide - a user suggested alternative
2 projects | 20 Aug 2026 -
Show HN: Cursor's Tab, cursor-jump included, inside Neovim
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A note from our sponsor - SaaSHub
www.saashub.com | 6 Sep 2026
Index
What are some of the best open-source Copilot projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | system-prompts-and-models-of-ai-tools | 143,394 |
| 2 | spec-kit | 133,550 |
| 3 | ui-ux-pro-max-skill | 125,312 |
| 4 | OpenMontage | 56,075 |
| 5 | dbeaver | 51,670 |
| 6 | chatbox | 41,655 |
| 7 | agents | 39,447 |
| 8 | CopilotKit | 37,210 |
| 9 | awesome-ai-agents | 29,872 |
| 10 | agentmemory | 20,972 |
| 11 | unity-mcp | 13,944 |
| 12 | E2B | 13,675 |
| 13 | RemoveWindowsAI | 12,964 |
| 14 | assistant-ui | 11,936 |
| 15 | UFO | 9,641 |
| 16 | Noi | 9,043 |
| 17 | BingGPT | 8,925 |
| 18 | git-mcp | 8,372 |
| 19 | CopilotForXcode | 8,220 |
| 20 | Mastering-GitHub-Copilot-for-Paired-Programming | 8,102 |
| 21 | obsidian-copilot | 7,671 |
| 22 | codecompanion.nvim | 6,834 |
| 23 | 9router | 6,614 |
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