Open source codex projects

Every project in the registry tagged codex, ranked by real GitHub adoption.

projects 135 combined stars ★ 1.7M refresh nightly
01 Hermes Agent ★ 260K

Desktop AI agent with persistent memory across platforms

last push15 hours ago languagePython licenseMIT
02 graphify ★ 141K

Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini

last push15 hours ago languagePython licenseApache-2.0
03 Orca ★ 113K

Run multiple AI coding agents in parallel, side by side

last push15 hours ago languageTypeScript licenseMIT
04 archify ★ 93K

Agent skill for beautiful, verifiable architecture, workflow, sequence, data-flow, and lifecycle diagrams—self-contained HTML with motion and crisp export.

last push19 hours ago languageJavaScript licenseApache-2.0
05 Understand-Anything ★ 90K

Graphs that teach > graphs that impress. Turn any code into an interactive knowledge graph you can explore, search, and ask questions about. Works with Claude C

last push8 days ago languageTypeScript licenseMIT
06 diagram-design ★ 64K

38 editorial diagram types for Claude Code, Codex, and Pi. Self-contained HTML + SVG. No shadows. No Mermaid slop.

last push2 days ago languageHTML licenseMIT
07 humanizer ★ 64K

Agent skill that removes signs of AI-generated writing from text

last push6 days ago languagePython licenseMIT
08 marketingskills ★ 58K

Marketing skills for Claude Code and AI agents. CRO, copywriting, SEO, analytics, and growth engineering.

last push3 days ago languageJavaScript licenseMIT
09 JeecgBoot ★ 48K

【低代码v2.0,一句话即可生成整个系统】企业级AI低代码平台,一键生成前后端代码甚至整个系统。 AI Skills 一句话画流程、设计表单、生成报表、大屏。内置 AI应用平台涵盖:AI聊天、知识库、流程编排、MCP插件等,兼容主流大模型。引领AI低代码「Skills 生成 → 在线配置 → 代码生成 → 手工合并->

last push33 hours ago languageJava licenseApache-2.0
10 codebase-memory-mcp ★ 48K

High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries

last push7 hours ago languageC licenseMIT
11 CowAgent ★ 48K

Open-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-agent, multi-model, multi-chan

last push27 hours ago languagePython licenseMIT
12 herdr ★ 48K

the runtime your coding agents live on

last push20 hours ago languageRust licenseApache-2.0
13 AionUi ★ 34K

Open-source 24/7 Cowork app for OpenClaw, Hermes, Claude Code, Codex, OpenCode and 20+ more CLI Agent | Customize your assistants | Team them up|Star if you lik

last push11 days ago languageTypeScript licenseApache-2.0
14 JumpServer ★ 32K

Secure access management for modern IT infrastructure

last push24 hours ago languagePython licenseGPL-3.0
15 guizang-ppt-skill ★ 29K

AI-agent Skill for generating polished HTML slide decks: editorial magazine and Swiss layouts, image prompts, social covers, and a WebGL/low-power presentation

last push4 days ago languageHTML licenseAGPL-3.0
16 Onlook ★ 27K

Visual React editor with real-time code updates

last push13 days ago languageTypeScript licenseApache-2.0
17 distilly ★ 26K

Distilly — Distill how they think into reusable Skills for any Agent or Bot. Formerly Colleague Skill(原同事 Skill).

last push21 days ago languagePython licenseMIT
18 NocoBase ★ 25K

Build custom apps without code, deploy with ease

last push15 hours ago languageTypeScript license—
19 Paseo ★ 23K

Run coding agents from your phone, desktop, or terminal

last push16 hours ago languageTypeScript license—
20 khazix-skills ★ 22K

数字生命卡兹克开源的 AI Skills 合集 | Agent Skills: leader(帮你定义目标), neat-freak 洁癖, hv-analysis, khazix-writer & more — Claude Code, Codex & 40+ agents

last push1 months ago languagePython licenseMIT
21 ego-lite ★ 21K

The fastest browser for AI agents to run browser automation, built for sharing your logged-in browser state with your AI agents, like Codex or Claude Code, with

last push24 hours ago languageJavaScript licenseMIT
22 browser-harness ★ 19K

Browser Harness | Self-healing harness that enables LLMs to complete any task.

last push15 hours ago languagePython licenseMIT
23 deepwiki-open ★ 18K

Open Source DeepWiki: AI-Powered Wiki Generator for GitHub/Gitlab/Bitbucket Repositories. Join the discord: https://discord.gg/gMwThUMeme

last push6 days ago languagePython licenseMIT
24 opencodex ★ 18K

Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Grok, DeepSeek, Ollama…) with Codex CLI, App, SDK, and Claude Code

last push15 hours ago languageTypeScript licenseMIT
25 Superset ★ 16K

Run dozens of AI coding agents in parallel on your machine

last push15 hours ago languageTypeScript license—
26 agent-orchestrator ★ 14K

Run and supervise teams of coding agents from planning to merge. Any harness (Claude code, codex, +25 more). Desktop, web, mobile, and cloud agents.

last push15 hours ago languageGo licenseApache-2.0
27 loop-engineering ★ 12K

Practical patterns, starters & CLI tools for loop engineering with AI coding agents. Design systems that prompt and orchestrate agents (inspired by Addy Osmani

last push27 hours ago languageTypeScript licenseMIT
28 codeburn ★ 12K

Free, local tool to track AI coding token usage and cost across 37 tools and agents (Claude Code, Cursor, Codex, Gemini and more), by model, project, and task.

last push15 hours ago languageTypeScript licenseMIT
29 genoffice ★ 12K

Free, open-source AI Office suite: Docs, Sheets, Slides, PDF, Markdown and HTML editors with a built-in AI agent, plus a `genoffice` CLI and agent skill so Clau

last push18 hours ago languageTypeScript licenseApache-2.0
30 codex-security ★ 11K

OpenAI's Codex Security CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities. npm: https://www.npmjs.com/package/@openai/codex-se

last push15 hours ago languageTypeScript licenseApache-2.0
31 Omnigent ★ 11K

Common layer for composing and governing AI agents

last push15 hours ago languagePython licenseApache-2.0
32 Graft ★ 11K

Turbocharge Claude Code, Cursor, Codex, Gemini & every coding agent: faster, cheaper, with contextual understanding specific to your codebase.

last push20 hours ago languageTypeScript licenseMIT
33 Trail-Code ★ 11K

Turbocharge Claude Code, Cursor, Codex, Gemini & every coding agent: faster, cheaper, with contextual understanding specific to your codebase.

last push20 hours ago languageTypeScript licenseMIT
34 elephant-goldfish-model ★ 10K

Open-source skills for designing and reviewing software with AI agents

last push15 hours ago languagePython licenseApache-2.0
35 plannotator ★ 9.8K

Annotate and review coding agent plans and code diffs visually, share with your team, send feedback to agents with one click.

last push15 hours ago languageTypeScript licenseApache-2.0
36 munder-difflin ★ 9.3K

A local multi-agent harness that works with your existing Claude Code, Codex subscriptions, allows you to run an office of agents

last push18 hours ago languageJavaScript licenseMIT
37 cindy ★ 9.0K

Consider it done. The open-source AI agent that works out of the box · 想到,就能做到。开源、开箱即用的 AI Agent。

last push15 hours ago languageTypeScript licenseApache-2.0
38 oh-story-claudecode ★ 8.3K

Claude Code / Codex / OpenCode agent skills for writing Chinese web novels (网文): 扫榜、拆文、写作、去AI味、封面全流程,长篇短篇都支持 | 13 skills for novel writing and long-form fiction

last push26 hours ago languagePython licenseMIT
39 guizang-social-card-skill ★ 7.9K

🪧 Claude Code / Codex skill — generate Xiaohongshu carousels & WeChat 21:9+1:1 cover pairs. Editorial × Swiss visual systems, 28 layouts, 10 themes, single-fil

last push4 days ago languageHTML licenseAGPL-3.0
40 gpt-load ★ 7.2K

Self-hosted AI gateway for multi-channel, multi-credential setups — API keys and subscription accounts, scheduling, failover, request logs and usage. 自托管 AI 网关:

last push24 hours ago languageGo licenseMIT
41 loopx ★ 6.5K

Long-horizon agent control plane for durable, governed work across Codex, Claude Code, and other harnesses.

last push15 hours ago languagePython licenseApache-2.0
42 skills ★ 6.3K

Browser automation CLI built for AI agents. Break through anti-bot walls, hand off to humans across platforms when stuck. Parallel multi-task execution, indepen

last push2 months ago languagePython licenseMIT
43 axonhub ★ 5.4K

⚡️ Open-source AI Gateway — Use any SDK to call 100+ LLMs. Built-in failover, load balancing, cost control & end-to-end tracing.

last push15 hours ago languageGo licenseApache-2.0
44 oh-my-hermes ★ 5.1K

⚚ The coding harness with Hermes Agent wired into IDE.

last push16 hours ago languagePython licenseMIT
45 MonkeyCode ★ 4.9K

AI coding platform for teams

last push18 hours ago languageTypeScript licenseAGPL-3.0
46 bb ★ 4.8K

The agent IDE that builds itself

last push15 hours ago languageTypeScript licenseMIT
47 codex-keysmith ★ 4.8K

Versioned Codex instruction deployment with preview, ownership manifests, hook isolation, scenario evaluation, and recovery.

last push1 months ago languagePython licenseMIT
48 open-knowledge ★ 4.8K

Beautiful, AI-native markdown IDE and LLM wiki

last push20 hours ago languageTypeScript licenseGPL-3.0
49 council-of-high-intelligence ★ 4.7K

Structured multi-perspective deliberation for hard decisions. Run full councils, focused triads, or duo debates across Claude Code, Codex, Gemini CLI, and OpenC

last push29 hours ago languageShell licenseMIT
50 Observal ★ 4.5K

Observal is self-hosted registry for your coding agent extensions with a built in insight engine. Setup Observal, define the scope and share your Skills, MCPs

last push25 hours ago languagePython licenseApache-2.0
51 terminal-browser ★ 4.4K

A browser inside your terminal

last push17 hours ago languageTypeScript licenseMIT
52 openfilm ★ 4.3K

The open source AI video agent: turns any coding agent into a video agent, with an editor to change anything it makes.

last push20 hours ago languageTypeScript licenseMIT
53 CPA-Manager-Plus ★ 4.0K

A self-hosted CPA / CLIProxyAPI management panel and AI gateway observability dashboard for requests, usage, cost, quota, failures, and account health.

last push28 hours ago languageGo licenseMIT
54 knowhere ★ 3.9K

Knowhere extracts, parses, and outputs structured chunks ready for AI Agents and RAG.

last push20 hours ago languagePython licenseApache-2.0
55 lazycodex ★ 3.9K

The one and only agent harness for complex codebases. Project memory, planning, execution, and verified completion inside Codex.

last push21 hours ago languageTypeScript licenseMIT
56 pstack-claude ★ 3.8K

Claude Code, Codex, Copilot, Pi, OpenCode, Gemini, and Prime Agent versions of Poteto's pstack. Rigorous agent workflows with Cursor primitives translated for o

last push17 hours ago languageTypeScript licenseMIT
57 Vibe-Skills ★ 3.8K

Intelligent Skill routing and workflow orchestration for AI agents — +21.12 pp reward, −29.6% tokens on SkillsBench with DeepSeekV4Flash-VE.

last push3 days ago languagePython licenseApache-2.0
58 Letta ★ 3.8K

Stateful AI agents that remember, learn, and improve over time

last push15 hours ago languageTypeScript licenseApache-2.0
59 drama-skills ★ 3.7K

开源 AI 短剧/漫剧创作 skill 合集:剧本、角色资产、分镜 storyboard、图片/视频提示词、审查,适配 Claude Code 与 Codex | Open-source AI short drama / micro-drama skills for Claude Code & Codex: scrip

last push26 hours ago languagePython licenseMIT
60 llm-wiki-agent ★ 3.7K

A personal knowledge base that builds and maintains itself. Drop in sources — Claude (or Codex/Gemini) reads them, extracts knowledge, and maintains a persisten

last push23 hours ago languagePython licenseMIT

Related tags

← all tags

Frequently asked questions

How many open source codex projects are there?

This registry tracks 135 projects tagged codex, with 1,749,374 GitHub stars between them. The most-adopted is Hermes Agent at 259,804 stars.

Are these codex projects free to use?

Yes — 130 of the 135 carry an explicit open-source licence across 4 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.

Which codex project should I choose?

The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.

Are these codex projects still maintained?

130 of the 135 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.