Zvec
Alibaba CloudZvec 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- 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.
- https://github.com/alibaba/zvec/blob/main/LICENSE recorded 2026-08-18
LICENSE file is the verbatim Apache-2.0 text
- https://api.github.com/repos/alibaba/zvec recorded 2026-08-18
Repo metadata - license spdx_id Apache-2.0, private false, archived false, default branch main - for alibaba/zvec.
- https://github.com/alibaba/zvec/blob/main/README.md recorded 2026-08-18
README describes an in-process vector database embedded directly into applications, with group-by search across flat, HNSW, HNSW-RaBitQ and sparse indexes, and published benchmarks, with no paid tier, enterprise edition or license-key-gated build beside it.
Adoption
2 high confidence40,993 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.
- https://pypistats.org/api/packages/zvec/recent recorded 2026-08-18
last_month downloads = 40,993 for zvec
Capability
3 medium confidenceBanded 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