* [GeoIP2 Reader for Go v2.3.0](https://github.com/oschwald/geoip2-golang) – Library that reads MaxMind GeoLite2 and GeoIP2 MMDB database files and decodes records for Go.

* [MaxMind DB Reader for Go v2.5.0](https://github.com/oschwald/maxminddb-golang) – Go library for reading MaxMind DB format geolocation databases with performance-optimized features.

* [geoip v1.1.1](https://github.com/lrstanley/geoip) – Self-hosted geolocation API service for querying IP-based location data.

* [gfw-pac v20260813.1](https://github.com/zhiyi7/gfw-pac) – PAC generator and prebuilt PAC files supporting custom proxy/direct domain lists, IP-based CN direct routing, and IPv6.

* [GeoIP CLI 202607300033](https://github.com/Loyalsoldier/geoip) – CLI tool for customizing and releasing various GeoIP file formats including V2Ray dat, MaxMind mmdb, and multiple ruleset files.