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Best alien alternatives

Explore highly rated tools in the same categories as alien, compared using public project data.

Recommended alternatives

12 tools

100/100

khazix-skills

数字生命卡兹克开源的 AI Skills 合集 | Agent Skills: leader（帮你定义目标）, neat-freak 洁癖, hv-analysis, khazix-writer & more — Claude Code, Codex & 40+ agents

Open source Developer ToolsAI
19,518GitHub stars
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100/100

khoj

Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or loca

Open source AI
36,458GitHub stars
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C
100/100

crewAI

Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tac

Open source AI
56,878GitHub stars
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100/100

AutoGPT

AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.

Open source AI
186,506GitHub stars
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100/100

spec-kit

💫 Toolkit to help you get started with Spec-Driven Development

Open source AI
127,901GitHub stars
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100/100

CowAgent

Open-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-model, multi-channel. Lightwei

Open source AI
46,511GitHub stars
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100/100

prompts.chat

f.k.a. Awesome ChatGPT Prompts. Share, discover, and collect prompts from the community. Free and open source — self-host for your organization with complete pr

Open source AI
167,121GitHub stars
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100/100

onnx

Open standard for machine learning interoperability

Open source AI
21,300GitHub stars
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S
100/100

sglang

SGLang is a high-performance serving framework for large language models and multimodal models.

Open source AI
31,596GitHub stars
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L
100/100

LightRAG

[EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation"

Open source AI
38,700GitHub stars
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100/100

mcp-use

The fullstack MCP framework to develop MCP Apps for ChatGPT / Claude & MCP Servers for AI Agents.

Open source AI
10,478GitHub stars
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100/100

inbox-zero

The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.

Open source AIDatabase
12,015GitHub stars
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