langchain-ai/langchain
🦜🔗 The platform for reliable agents.
What it does
LangChain is a toolkit that makes it easier for software teams to build AI-powered applications and autonomous agents — systems that can reason, make decisions, and take actions on their own. It works by connecting different AI services (like ChatGPT or Google Gemini) with other tools and data sources, so developers don't have to build those connections from scratch.
Why it matters for PMs
With over 126,000 stars on GitHub, LangChain has become one of the most widely adopted foundations for AI product development, meaning a huge portion of today's AI-powered products are likely built on top of it. For PMs and founders, this signals both a strong community and ecosystem to leverage, and a strategic dependency worth understanding as your team evaluates how to build or compete in the AI application space.
Early stage — limited signal data
Score updated Feb 18, 2026
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