Best Vector Database tools — Open source
A curated ranking of the Vector Database tools in the IndieBoot catalog, ordered by community traction on GitHub.
8 in catalog
Best Open source Vector Database tools
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Milvus
The vector DB built for scale
#1 — 46,120 GitHub stars
Vector Database -
Qdrant
The vector search engine
#2 — 34,578 GitHub stars
Vector Database -
Chroma
The AI-native embedding database
#3 — 29,310 GitHub stars
Vector Database -
pgvector
Vector search inside Postgres
#4 — 23,020 GitHub stars
Vector Database -
Weaviate
The vector database with hybrid search
#5 — 16,814 GitHub stars
Vector Database -
LanceDB
The embedded vector database
#6 — 11,428 GitHub stars
Vector Database -
sqlite-vec
A vector search SQLite extension that runs anywhere
#7 — 8,110 GitHub stars
Vector Database -
Vespa
AI search at scale
#8 — 7,112 GitHub stars
Vector Database
Frequently asked questions
- What is the best open source Vector Database for indie makers?
- Based on the IndieBoot catalog, Milvus, Qdrant, Chroma are strong starting points among the 8 curated open source Vector Database listings.
- How many open source Vector Database does the IndieBoot catalog include?
- IndieBoot currently lists 8 curated open source Vector Database entries, each with official links and context.
- How are the best open source Vector Database ranked?
- Listings are ranked by GitHub stars (highest first) and then alphabetically, so community-backed options surface at the top.