STACKQUADRANT

microsoft/SPTAG

Vector Databases

A distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scenario.

6.6
GitHub Metrics
Stars
5.0k
Forks
618
Open Issues
141
Watchers
131
Contributors
42
Weekly Commits
0
Language
C++
License
MIT
Last Commit
Jun 1, 2026
Created
Sep 12, 2018
Latest Release
Release Date
Synced: Jun 3, 2026
Quality Scores
Documentation Qualityw: 20%
5.9

No dedicated docs site. Description: 204 chars. Stars signal: 5,002. Contributors: 42. Score: 5.9/10

Community Healthw: 20%
7.2

Stars: 5,002. Contributors: 42. Watchers: 131. Forks: 618. Issue ratio: 2.8%. Score: 7.2/10

Maintenance Velocityw: 15%
5.7

Last commit: 2d ago. Weekly commits: 0. No releases published. Maturity bonus: 7.7y old. Score: 5.7/10

API Design & DXw: 20%
6.6

Stars/issues ratio: 35. No dedicated API docs. Permissive license: MIT. Popularity signal: 5,002 stars. Score: 6.6/10

Production Readinessw: 15%
6.9

Battle-tested: 5,002 stars. Peer review: 42 contributors. No versioned releases. Licensed: MIT. Age: 7.7 years. Maintenance: last commit 2d ago. Score: 6.9/10

Ecosystem Integrationw: 10%
7.5

Fork interest: 618. Ecosystem: C++. Integration-friendly: MIT. Adoption: 5,002 stars. Score: 7.5/10

Tags
approximate-nearest-neighbor-searchdistributed-servingfresh-updateneighborhood-graphspace-partition-treevector-search
Radar
Documentation Quality
Community Health
Maintenance Velocity
API Design & DX
Production Readiness
Ecosystem Integration