open-claude-ui alternatives

Caho1/open-claude-ui (1k stars, +1k this week): React component library that recreates the Claude desktop app UI, with a 3,000+ line reverse-engineering manual. 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 open-claude-ui, 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. deeplethe/solid-glass

   +2.1k/wkest.

   A design system for AI applications. Material, physical, tactile, technical. Why it matters: useful plumbing for shipping LLM-powered features.

   1.4k stars · TypeScript · shared topics: design-system, react, tailwindcss · solid-glass alternatives

2. 2. affaan-m/ECC

   +5.3k/wkest.

   The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code… Why it matters: useful plumbing for shipping LLM-powered features.

   282k stars · JavaScript · shared topics: anthropic, claude · ECC alternatives

3. 3. JuliusBrussee/caveman

   +2.8k/wkest.

   🪨 why use many token when few token do trick. Viral skill + proxy for coding agents that cuts 65% of tokens by talking like a caveman. Why it matters: useful plumbing for shipping LLM-powered features.

   113k stars · Go · shared topics: anthropic, claude · caveman alternatives

4. 4. diegosouzapw/OmniRoute

   +2.2k/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.

   77k stars · TypeScript · shared topics: anthropic, claude · OmniRoute alternatives

5. 5. NousResearch/hermes-agent

   +1.7k/wkest.

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

   254k stars · Python · shared topics: anthropic, claude · hermes-agent alternatives

6. 6. michael-denyer/pstack-claude

   +1.6k/wkest.

   Claude Code, Codex, Copilot, Pi, OpenCode, Gemini, and Prime Agent versions of Poteto's pstack. Why it matters: useful plumbing for shipping LLM-powered features.

   2.7k stars · JavaScript · shared topics: anthropic, claude · pstack-claude alternatives

7. 7. thedotmack/claude-mem

   +1.4k/wkest.

   Persistent Context Across Sessions for Every Agent – Captures everything your agent does during sessions, compresses it with AI, and injects… Why it matters: useful plumbing for shipping LLM-powered features.

   101k stars · TypeScript · shared topics: anthropic, claude · claude-mem alternatives

8. 8. Jakeschincariol/replica-skill

   +949/wkest.

   Eleven free Claude skills that clone any app: reverse-engineer it, rebuild it, test it for bugs, then fix what its users hate. Free, MIT. Why it matters: useful plumbing for shipping LLM-powered features.

   2.9k stars · Python · shared topics: claude, reverse-engineering · replica-skill alternatives

9. 9. can1357/oh-my-pi

   +635/wkest.

   ⌥ Coding agent with the IDE wired in. Built by Stencil Labs. Why it matters: useful plumbing for shipping LLM-powered features.

   36k stars · TypeScript · shared topics: anthropic, claude · oh-my-pi alternatives

10. 10. guillaumemeyer/watermarks-remover

    +450/wkest.

    A privacy-first app that strips AI watermarks from content you own. Why it matters: useful plumbing for shipping LLM-powered features.

    24k stars · Python · shared topics: anthropic, claude · watermarks-remover alternatives

11. 11. asgeirtj/system_prompts_leaks

    +336/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, claude · system_prompts_leaks alternatives

12. 12. LibreChat-AI/LibreChat

    +327/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, claude · LibreChat alternatives

More: all trending LLM tooling repos · compare open-claude-ui with the top 2