LangGraph
LangGraph is an open source library for building stateful, multi-actor AI applications and complex agent workflows. Built on top of LangChain, it uses a graph-based abstraction to model agent state and transitions, enabling the construction of cyclical, branching, and parallel agent workflows that go beyond simple linear chains.
🔗 https://langchain-ai.github.io/langgraph/ | GitHub: https://github.com/langchain-ai/langgraph