Alternatives

Products that do what An 'offline' reverse-geocoder API written in Go does

I've recently been working with real-time geoJSON data at a rate of 50+ queries per second. SaaS solutions can be prohibitively expensive at this rate, thus, I created go-reverse-geo. Data is pulled from geonames.org and is stored in MongoDB (a requirement of my current project). It is very much a work-in-progress (I wrote it this morning). Hope someone finds it useful. https://paranoia.dev/vivi/go-reverse-geo

1. 1FG
   Free GeoJSON editor to visualize, download or convert into many formats▲214

   2020 · geoman.io

2. 2GI
   Geo-info A dead simple reverse geocoding API▲6

   2020 · geo-info.co

3. 3GP
   Gojay – Performant JSON encoder/decoder for Golang▲153

   2018 · github.com

4. 4AF
   A fast JSON library for Go▲119

   2021 · github.com

5. 5RG
   Reverse Geocoding Offline Database▲5

   2022 · reverse-geocoding.com

6. 6AA
   An API to encode and decode coordinates using Geohash▲40

   2019 · geohash.world

7. 7FD
   Free database of geographic place names and geospatial data▲108

   2015 · github.com

8. 8
   Transform 2.0▲149

   A polyglot web converter

   2019

9. 9
   Quetzly▲79

   Test, monitor, and visualize your location APIs in one place

   Jan 2026

10. 10
    GitGuessr▲98

    Train code reading skills in a GeoGuessr-like game

    Feb 2026

11. 11
    Atlasly▲86

    Your site did 5 days of research. We did it in 60 seconds.

    Mar 2026

12. 12GI
    Geoparser.io API – sentences go in, GeoJSON comes out▲13

    2016 · geoparser.io

13. 13GA
    Geometry-aware Hashing of GeoJSON objects▲7

    Just a quick little feature I implemented over the weekend. TODO: Assure that polygons can be palindromic as well

    2024 · altayakkus.dev

14. 14GA
    Geocoding and Map Tiles SaaS▲6

    Hi everyone, We at NetToolKit are launching a new geocoding and map tile service and we would love your help. You can compare the accuracy of our geocoders against several others at https://www.nettoolkit.com/geo/demo and you can find out more about the service at https://www.nettoolkit.com/geo/landing. We’re looking for help primarily in two areas: assessing the accuracy of our geocoder and figuring out what it would take to sign up customers. For the first area, anyone who is familiar with US addresses can help by visiting…

    2019

15. 15GI
    Geo-Info – A Simple Geocoding API▲8

    2019 · geo-info.co

16. 16FO
    Free & Open-Source GeoGuessr▲5

    2024 · worldguessr.com

17. 17TS
    The simplest geohash implementation under the sun▲24

    2021 · mro.name

18. 18FF
    fastjson - Fast JSON Parsing for Go▲20

    2018 · github.com

19. 19KM
    Krata Maps – open-source Figma like GeoJSON Editor▲8

    2024 · krata.app

20. 20IV
    I've built a CLI to create remote dev envs as a Go learning project▲5

    Hey HN, As most of you (I think?), I cannot learn something without having a project, on the side, to implement what I’ve just learned. Recode is the project that I've used to learn Go. It lets you create a development environment in your cloud provider account easily. You can think of it as a desktop version of Gitpod / Coder / GitHub Codespaces less polished and with less features but 100% free and open-source. At the time of writing, it only works with Visual Studio Code and AWS. In order to let you configure your development environments easily, I’ve chosen to use Docker with…

    2022 · github.com

21. 21IB
    I built a map where anyone can rename anything▲7

    The idea is simple: click any place on the map, propose a name, others vote, or it will be auto-accepted in ~5min. No account needed for fresh locations or name duel - only to challenge already-renamed places or vote to prevent abuse. 40k renames so far, and surprisingly people mostly behave. Some names are genuinely creative and I keep learning random geography facts just by watching the map (did you know someone mapped every single animal in a Taiwan Kaohsiung zoo on OpenStreetMap?) Non-commercial, just a side project. Stack is SvelteKit, MapLibre, 40GB vector map self-hosted on Cloudflare…

    Feb 2026 · rename.world

22. 22GH
    Gojay – highly performant JSON encoder/decoder for Golang▲11

    2018 · github.com

23. 23IW
    I wrote a VectorDB in Go, built for Hackers, not Hyperscalers▲8

    Oct 2025 · github.com

24. 24NS
    Node S2 – A TypeScript Geohashing and Geolocation Library▲10

    2019 · radar.io

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