AI Potluck
Infrastructure / Storage & Retrieval

Zvec

Alibaba Cloud

Zvec is an in-process vector database that embeds directly into an application rather than running as a server, supporting flat, HNSW, HNSW-RaBitQ and sparse indexes with group-by retrieval. Alibaba Group developed and uses it internally.

Verified 2026-08-18 via the GitHub API and the LICENSE body.

Openness

5 high confidence
5.0
license
Apache-2.0(OSI)
source
public
core-gated
ungated

Apache-2.0 license body confirmed. The repository is public and unarchived and builds the whole product, and the README describes no paid tier, enterprise edition or license-gated build beside it, so source is public and the core ungated.

Adoption

2 high confidence
2.0

40,993 PyPI downloads of `zvec` in the trailing 30 days, which lands in the 10K-100K band of the software usage scale, level 2. Banded on the package figure rather than the 15,461 GitHub stars: downloads measure use and stars measure attention, and here the two point at different levels, which is the case the routing rules rank downloads above stars for.

Capability

3 medium confidence
3.0

Banded on the category feature matrix as single-purpose store or index. Placed two bands below the vespa anchor, on a matrix that bands on how much of the persist-index-retrieve path a product provides itself, at what scale and over how many retrieval modes.

  • https://github.com/alibaba/zvec/blob/main/README.md recorded 2026-08-18

    README still documents an in-process vector database embedded directly into applications, with group-by search across flat, HNSW, HNSW-RaBitQ and sparse indexes, and published benchmarks.

Verified 2026-08-18