# Integration

> Integrate pgvecto.rs with LangChain, LlamaIndex, and Citus distributed PostgreSQL.

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LLMS index: [llms.txt](/llms.txt)

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Section pages:

- [LangChain](/pgvecto-rs/integration/langchain/): This document describes the LangChain integration.
- [LlamaIndex](/pgvecto-rs/integration/llama-index/): LlamaIndex is a simple, flexible data framework for connecting custom data sources to large language models (LLMs).
- [Citus](/pgvecto-rs/integration/citus/): citus is a PostgreSQL extension that turns Postgres into a distributed database. pgvecto.rs works well with citus Here are the steps to enable vector search in