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langgraph

 Building language agents as graphs 

https://github.com/langchain-ai/langgraph

LangGraph is a library for building stateful, multi-actor applications with LLMs, built on top of (and intended to be used with) LangChain. It extends the LangChain Expression Language with the ability to coordinate multiple chains (or actors) across multiple steps of computation in a cyclic manner. It is inspired by Pregel and Apache Beam. The current interface exposed is one inspired by NetworkX.

langchain

Build context-aware reasoning applications

https://github.com/langchain-ai/langchain

LangSmith

Introduction

LangSmith is a platform for building production-grade LLM applications.

It lets you debug, test, evaluate, and monitor chains and intelligent agents built on any LLM framework and seamlessly integrates with LangChain, the go-to open source framework for building with LLMs.

LangSmith is developed by LangChain, the company behind the open source LangChain framework.

https://docs.smith.langchain.com/

 

langchain4j

Java version of LangChain

https://github.com/langchain4j/langchain4j

 

 

langfuse

Open source LLM engineering platform. Observability, metrics, evals, prompt management, testing -- 🍊YC W23 🤖 integrate via Typescript, Python, OpenAI, Langchain, LlamaIndex, Litellm

https://github.com/langfuse/langfuse