ChromaDB is an open-source vector database released under the Apache 2.0 license, designed for AI applications that require fast similarity search over high-dimensional embeddings. It supports vector search, full-text search, metadata filtering, and multi-modal data, and has accumulated over 27,000 GitHub stars and 15 million monthly downloads.

Developed by Chroma Inc., ChromaDB is available as a self-hosted library for Python and JavaScript environments, as well as Chroma Cloud, a fully managed serverless version offering Free, Pro, and Enterprise tiers. It is widely used in retrieval-augmented generation pipelines and AI agent memory systems.