Nominatim vs OpenLayers
A side-by-side comparison of two self-hosted maps & gis options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Nominatim
Geocoding and reverse geocoding for OpenStreetMap data
VS
OpenLayers
High-performance library for all kinds of web maps
| Feature | Nominatim | OpenLayers |
|---|---|---|
| Category | Maps & GIS | Maps & GIS |
| License | GPL-3.0 | BSD-2-Clause |
| Language | Python | JavaScript |
| Setup difficulty | Hard | Medium |
| Min. RAM | 16,384 MB | 256 MB |
| Deployment | docker, bare-metal | source, bare-metal |
| GitHub stars | ★ 4,406 | ★ 12,532 |
| First released | 2008 | 2006 |
| Replaces | Google Geocoding API | Google Maps JavaScript API |
Why pick each one
Choose Nominatim if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Active community (4.4k GitHub stars)
- Written in Python
Choose OpenLayers if…
- Released under the BSD-2-Clause license
- Mature project with 12.5k GitHub stars
- Written in JavaScript
- Tiny footprint — runs in 256 MB RAM
Frequently asked questions
Is Nominatim or OpenLayers better?
OpenLayers is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Nominatim if its specific feature set fits your needs better.
Are Nominatim and OpenLayers free and open-source?
Yes. Nominatim is licensed under GPL-3.0 and OpenLayers under BSD-2-Clause. Both can be self-hosted at no software cost.
Can I run Nominatim and OpenLayers with Docker?
Nominatim: yes. OpenLayers: check the project docs for container support.