The best opencodex alternatives

chatbox

chatboxai/chatbox

Powerful AI Client

Choose chatbox if…

• GNU General Public License v3.0 suits your use better than MIT License
• you want the more widely starred option (42.2k)
• you specifically need assistant or chatbot

Shares chatgpt, claude, claude-code, deepseek with opencodex.

repomix

yamadashy/repomix

📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.

Choose repomix if…

• you want the more widely starred option (29.1k)
• you specifically need ai or artificial-intelligence

Shares anthropic, chatgpt, claude, deepseek with opencodex.

deepchat

ThinkInAIXYZ/deepchat

🐬DeepChat - A smart assistant that connects powerful AI to your personal world

Choose deepchat if…

• Apache License 2.0 suits your use better than MIT License
• you want something your agent can install directly rather than a library to wire up yourself
• you prefer a smaller, narrower project to a large one
• you specifically need agent or agent-skills

Shares chatgpt, claude, deepseek, gemini with opencodex.

LibreChat

danny-avila/LibreChat

Enhanced ChatGPT Clone: Features Agents, MCP, Skills, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active

Choose LibreChat if…

• you want the more widely starred option (46.7k)
• you specifically need ai or artifacts

Shares anthropic, chatgpt, claude, deepseek with opencodex.

The React library for LLMs

Choose llm-ui if…

• you prefer a smaller, narrower project to a large one
• you specifically need component-library or generative-ai

Shares chatgpt, claude, llm, openai with opencodex.

OmniRoute

diegosouzapw/OmniRoute

Never stop coding. Free MIT AI gateway: one endpoint, 352 providers (150+ free), 1200+ models Kimi, Claude, GPT, Gemini, GLM, DeepSeek, MiniMax. Works with Claude Code, Codex, Cursor, OpenCode, Cline & Copilot. Quota-aware auto-fallback, RTK+Caveman compression saves 15-95% tokens, MCP/A2A, Desktop/PWA. Built by 550+ contributors

Choose OmniRoute if…

• you want the more widely starred option (84.1k)
• you specifically need a2a or ai-agents

Shares ai-gateway, anthropic, claude, claude-code with opencodex.

unsloth

unslothai/unsloth

Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4, MiniMax-H3, Gemma 4, FLUX and more.

Choose unsloth if…

• you would rather work in Python than TypeScript
• Apache License 2.0 suits your use better than MIT License
• you want the more widely starred option (79.0k)
• you specifically need agent or ai

Shares chatgpt, deepseek, llm, openai with opencodex.

oh-my-openagent

code-yeongyu/oh-my-openagent

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

Choose oh-my-openagent if…

• you want something your agent can install directly rather than a library to wire up yourself
• you want the more widely starred option (70.7k)
• you specifically need ai or ai-agents

Shares anthropic, chatgpt, claude, codex with opencodex.

AionUi

iOfficeAI/AionUi

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 like it!

Choose AionUi if…

• Apache License 2.0 suits your use better than MIT License
• you want something your agent can install directly rather than a library to wire up yourself
• you want the more widely starred option (34.0k)
• you specifically need acp or agent-team

Shares claude-code, codex, gemini, llm with opencodex.

9router

decolua/9router

Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Auto-fallback, RTK -40% tokens, never hit limits.

Choose 9router if…

• you would rather work in JavaScript than TypeScript
• you want the more widely starred option (31.9k)
• you specifically need ai-agents or claude-code

Shares ai-gateway, anthropic, chatgpt, claude with opencodex.

sim

simstudioai/sim

Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

Choose sim if…

• Apache License 2.0 suits your use better than MIT License
• you want the more widely starred option (30.0k)
• you specifically need agent-workflow or agentic-workflow

Shares anthropic, deepseek, gemini, openai with opencodex.

dyad

dyad-sh/dyad

Local, open-source AI app builder for power users ✨ v0 / Lovable / Replit / Bolt alternative 🌟 Star if you like it!

Choose dyad if…

• you specifically need ai-app-builder or artificial-intelligence

Shares anthropic, deepseek, gemini, llm with opencodex.