Tile38
MIT in-memory geospatial database and geofencing server
Databases / Data · OSS/MIT · 9.7k
Reviewed 2026-10-18 · last push 2026-09-02 · repo checked 2026-10-19
What's Good
MIT (tidwall/tile38), release 1.38.0 (2026-06-09), developed since 2016. Object types include lat/lon points, bounding boxes, Geohash, GeoJSON, QuadKey and XYZ tiles. It speaks HTTP, WebSockets, telnet and the Redis RESP protocol (so Redis clients work), persists to disk, supports leader/follower replication and ships a CLI and benchmark tool. ★~9.7k.
The Catch
It is mostly a one-maintainer project, and releases are a few a year. Data must fit in memory. It is a specialised geofencing engine, not a general GIS database; for complex spatial SQL, PostGIS is the tool.
Verdict
The quickest way to add live geofencing — Redis-style simplicity for location data.
Embed
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Markdown
[](https://stackgems.com/gems/tile38)
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