lazycodex alternatives

code-yeongyu/lazycodex (3.8k stars, +174 this week): The one and only agent harness for complex codebases. Project memory, planning, execution, and verified completion inside Codex.

Below are 12 other LLM tooling repos tracked by OSS Radar that share at least two GitHub topics with lazycodex, 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. code-yeongyu/oh-my-openagent

   +129/wk

   OmO: Just type "mass ulw" keyword with your prompt. Now you are the master of graph engineering.

   70k stars · TypeScript · shared topics: AI, AI agents, Claude, Codex, OpenAI, orchestration, TypeScript · oh-my-openagent alternatives

2. 2. NousResearch/hermes-agent

   +1.8k/wk

   The agent that grows with you.

   257k stars · Python · shared topics: AI, AI agents, Claude, Claude Code, Codex, OpenAI · hermes-agent alternatives

3. 3. trailhq/Trail-Code

   +298/wk

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

   11k stars · TypeScript · shared topics: AI agents, Claude Code, CLI, Codex, developer tools, OpenAI · Trail-Code alternatives

4. 4. asgeirtj/system_prompts_leaks

   +293/wk

   Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex.

   70k stars · Python · shared topics: AI, AI agents, Claude, Claude Code, Codex, OpenAI · system_prompts_leaks alternatives

5. 5. lidge-jun/opencodex

   +273/wk

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

   18k stars · TypeScript · shared topics: Claude, Claude Code, Codex, developer tools, OpenAI, TypeScript · opencodex alternatives

6. 6. zhayujie/CowAgent

   +123/wk

   Open-source personal AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge.

   48k stars · Python · shared topics: AI, AI agents, Claude, Claude Code, Codex, OpenAI · CowAgent alternatives

7. 7. cheaper-inference/OmniRoute

   +2.5k/wkest.

   Never stop coding. Free MIT AI gateway: one endpoint, 375 providers (150+ free), 1,400+ models Kimi, Claude, GPT, Gemini, GLM, DeepSeek…

   81k stars · TypeScript · shared topics: AI agents, Claude, Claude Code, Codex, OpenAI · OmniRoute alternatives

8. 8. decolua/9router

   +331/wk

   Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers.

   31k stars · JavaScript · shared topics: AI agents, Claude, Claude Code, Codex, OpenAI · 9router alternatives

9. 9. chipfighter/context-attachment-manager

   +199/wk

   Long image chats in Codex and Claude, without the lag. The model manages its own images, pulling back only what it needs, and any image you…

   522 stars · TypeScript · shared topics: Claude, Claude Code, Codex, developer tools, OpenAI · context-attachment-manager alternatives

10. 10. liyupi/ai-guide

    +163/wkest.

    GPT Gemini Claude RAG MCP Claude Code TRAE Codex.

    22k stars · JavaScript · shared topics: AI, Claude, Claude Code, Codex, OpenAI · ai-guide alternatives

11. 11. Graphify-Labs/graphify

    +6.2k/wk

    Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph.

    135k stars · Python · shared topics: AI agents, Claude Code, Codex, developer tools · graphify alternatives

12. 12. affaan-m/ECC

    +4.8k/wk

    The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code…

    289k stars · JavaScript · shared topics: AI agents, Claude, Claude Code, developer tools · ECC alternatives

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