zvec
alibaba
Lightweight, in-process embedded vector database from Alibaba with multi-language bindings.
What is zvec?
A lightweight, in-process vector database from Alibaba - a library you embed directly, not a server. It supports dense and sparse vectors, hybrid search, write-ahead logging, and bindings for Python, Node and Dart/Flutter.
Pros & Cons
Pros
- No server or config - a real embedded vector DB
- Multi-language bindings, runs anywhere from notebooks to edge
- Apache-2.0, and 'battle-tested within Alibaba Group'
Cons
- 'Billions of vectors, sub-millisecond latency' is a vendor claim, not independently verified
- v0.4.0 - early, only 7 releases
- C++ core may need a build toolchain on some platforms
License
Apache-2.0 (OSI-open)
When it is interesting
An embedded vector DB for edge, desktop apps or local RAG.
When it is too early
Large production vector workloads while it is still v0.x.
This repo featured in the 2026-06 edition of the Open-Source AI Radar.
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