opencodex alternatives

lidge-jun/opencodex (17k stars, +84 this week): Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Grok, DeepSeek, Ollama…) with Codex CLI, App, SDK… Why it matters: useful plumbing for shipping LLM-powered features.

Below are 12 other LLM tooling repos tracked by OSS Radar that share at least two GitHub topics with opencodex, ordered by how many topics overlap, then by stars gained in the last 7 days. Topic overlap means a similar problem space, not a drop-in replacement, so check each project's README.

1. 1. decolua/9router

   +77/wkest.

   Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Why it matters: useful plumbing for shipping LLM-powered features.

   31k stars · JavaScript · shared topics: ai-gateway, anthropic, chatgpt, claude, claude-code, codex, deepseek, gemini, llm, openai

2. 2. asgeirtj/system_prompts_leaks

   +77/wkest.

   Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Why it matters: useful plumbing for shipping LLM-powered features.

   70k stars · Python · shared topics: anthropic, chatgpt, claude, claude-code, codex, gemini, grok, llm, openai

3. 3. diegosouzapw/OmniRoute

   +553/wkest.

   Never stop coding. Free MIT AI gateway: one endpoint, 359 providers (150+ free), 1200+ models Kimi, Claude, GPT, Gemini, GLM, DeepSeek… Why it matters: useful plumbing for shipping LLM-powered features.

   76k stars · TypeScript · shared topics: ai-gateway, anthropic, claude, claude-code, codex, deepseek, gemini, openai

4. 4. NousResearch/hermes-agent

   +539/wkest.

   The agent that grows with you. Why it matters: useful plumbing for shipping LLM-powered features.

   254k stars · Python · shared topics: anthropic, chatgpt, claude, claude-code, codex, llm, openai

5. 5. trailhq/Trail-Code

   +119/wkest.

   Turbocharge Claude Code, Cursor, Codex, Gemini & every coding agent: faster, cheaper, with contextual understanding specific to your… Why it matters: useful plumbing for shipping LLM-powered features.

   10k stars · TypeScript · shared topics: anthropic, claude-code, codex, developer-tools, gemini, llm, openai

6. 6. code-yeongyu/oh-my-openagent

   +63/wkest.

   OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering. Why it matters: useful plumbing for shipping LLM-powered features.

   70k stars · TypeScript · shared topics: anthropic, chatgpt, claude, codex, gemini, openai, typescript

7. 7. dyad-sh/dyad

   +42/wkest.

   Local, open-source AI app builder for power users ✨ v0 / Lovable / Replit / Bolt alternative 🌟 Star if you like it! Why it matters: useful plumbing for shipping LLM-powered features.

   22k stars · TypeScript · shared topics: anthropic, deepseek, gemini, llm, ollama, openai, typescript

8. 8. qunqin24/Pulse

   +42/wkest.

   Know how much Claude Code, Codex, Cursor, Copilot and 70+ other AI coding tools you have left — a free, open-source macOS monitor on the… Why it matters: useful plumbing for shipping LLM-powered features.

   544 stars · Swift · shared topics: ai-tools, claude, claude-code, codex, gemini, llm, openai

9. 9. headroomlabs-ai/headroom

   +266/wkest.

   Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. Why it matters: useful plumbing for shipping LLM-powered features.

   75k stars · Python · shared topics: anthropic, claude-code, llm, openai, proxy, typescript

10. 10. langchain-ai/langchain

    +161/wkest.

    The agent engineering platform. Why it matters: useful plumbing for shipping LLM-powered features.

    148k stars · Python · shared topics: anthropic, chatgpt, gemini, llm, openai, typescript

11. 11. f/prompts.chat

    +154/wkest.

    f.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Why it matters: useful plumbing for shipping LLM-powered features.

    173k stars · HTML · shared topics: chatgpt, claude, gemini, llm, openai, typescript

12. 12. LibreChat-AI/LibreChat

    +63/wkest.

    Enhanced ChatGPT Clone: Features Agents, MCP, Skills, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral… Why it matters: useful plumbing for shipping LLM-powered features.

    46k stars · TypeScript · shared topics: anthropic, chatgpt, claude, deepseek, gemini, openai

More: all trending LLM tooling repos · compare opencodex with the top 2