Side-by-side open-source comparison for 2026. Chroma currently leads on GitHub stars (27.4k) over Weaviate (16.0k). Both tools list each other as alternatives in this directory.
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | Chroma Chroma is an open-source search and retrieval database designed specifically for AI applications. It enables efficient vector storage, similarity search, and large-scale retrieval necessary for modern machine learning and LLM-powered projects. | 27.4k | Rust | Apache License 2.0 |
| 2 | Weaviate Weaviate is an open-source vector database designed to store and manage both objects and vectors, enabling combined vector search with structured filtering. It offers fault tolerance, scalability, and is built as a cloud-native, developer-friendly solution for semantic search and AI-powered applications. | 16.0k | Go | BSD 3-Clause "New" or "Revised" License |
Chroma is an open-source search and retrieval database designed specifically for AI applications. It enables efficient vector storage, similarity search, and large-scale retrieval necessary for modern machine learning and LLM-powered projects.
Rust · Apache License 2.0 · 27.4k GitHub stars
Weaviate is an open-source vector database designed to store and manage both objects and vectors, enabling combined vector search with structured filtering. It offers fault tolerance, scalability, and is built as a cloud-native, developer-friendly solution for semantic search and AI-powered applications.
Go · BSD 3-Clause "New" or "Revised" License · 16.0k GitHub stars
Chroma is an open-source search and retrieval database designed specifically for AI applications. It enables efficient vector storage, similarity search, and large-scale retrieval necessary for modern machine learning and LLM-powered projects.
Weaviate is an open-source vector database designed to store and manage both objects and vectors, enabling combined vector search with structured filtering. It offers fault tolerance, scalability, and is built as a cloud-native, developer-friendly solution for semantic search and AI-powered applications.
Chroma currently has more GitHub stars (27.4k) than Weaviate (16.0k). Star counts are a proxy for community adoption.
Yes. Both are open source and free to use in your own projects.
Pages only exist for mutual alternatives — each tool lists the other in its alternatives metadata. Stats come from the canonical tool records in this directory.
Get notified about new tools and updates to existing ones.