onyx alternatives

onyx-dot-app/onyx (32k stars, +35 this week): Open Source AI Platform - AI Chat with advanced features that works with every LLM. 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 onyx, 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. langchain-ai/langchain

   +182/wkest.

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

   148k stars · Python · shared topics: ai, chatgpt, llm, python, rag

2. 2. open-webui/open-webui

   +175/wkest.

   User-friendly AI Interface (Supports Ollama, OpenAI API, ...). Why it matters: useful plumbing for shipping LLM-powered features.

   156k stars · Python · shared topics: ai, llm, llm-ui, rag, self-hosted

3. 3. langchain-ai/langgraph

   +140/wkest.

   Build resilient agents. Why it matters: useful plumbing for shipping LLM-powered features.

   43k stars · Python · shared topics: ai, chatgpt, llm, python, rag

4. 4. unslothai/unsloth

   +119/wkest.

   Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4, MiniMax-H3, Gemma 4, FLUX and more. Why it matters: useful plumbing for shipping LLM-powered features.

   78k stars · Python · shared topics: ai, chatgpt, llm, python, self-hosted

5. 5. mem0ai/mem0

   +77/wkest.

   The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production. Why it matters: useful plumbing for shipping LLM-powered features.

   67k stars · Python · shared topics: ai, chatgpt, llm, python, rag

6. 6. Tencent/WeKnora

   +679/wkest.

   Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki. Why it matters: useful plumbing for shipping LLM-powered features.

   34k stars · Go · shared topics: ai, llm, rag, vector-search

7. 7. BlenderGPT3D/blender-ai-addon

   +581/wkest.

   Blender add-on: create and edit 3D models by chatting with AI - send text or an image, get working bpy code. Why it matters: useful plumbing for shipping LLM-powered features.

   211 stars · Python · shared topics: ai, chatgpt, llm, python

8. 8. headroomlabs-ai/headroom

   +315/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: ai, llm, python, rag

9. 9. f/prompts.chat

   +203/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: ai, chatgpt, llm, nextjs

10. 10. unclecode/crawl4ai

    +182/wkest.

    Open-source web crawler and scraper for LLMs and AI agents: any website into clean, LLM-ready Markdown. Why it matters: useful plumbing for shipping LLM-powered features.

    85k stars · Python · shared topics: ai, llm, python, rag

11. 11. langgenius/dify

    +147/wkest.

    Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Why it matters: useful plumbing for shipping LLM-powered features.

    158k stars · TypeScript · shared topics: ai, llm, nextjs, python

12. 12. AstrBotDevs/AstrBot

    +98/wkest.

    AI Agent Assistant & development framework that integrates lots of IM platforms, LLMs, plugins and AI feature, and can be your openclaw… Why it matters: useful plumbing for shipping LLM-powered features.

    42k stars · Python · shared topics: ai, chatgpt, llm, python

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