Langchain
The agent engineering platform.
FreeOpen source
What you get
Langchain is a free, open-source AI agent framework published on GitHub by langchain-ai.
The agent engineering platform.
GitHub stars: 148,270
License: MIT (free to use)
Language: Python
Topics: agents, ai, ai-agents, anthropic, chatgpt, deepagents, enterprise, framework
Last updated: 2026-10-22
How to get it: open the repository on GitHub, read the README and follow the setup steps. HEEEXY lists it in the Lab because it is popular, actively maintained and openly licensed.
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