photon

Photon is an open source geocoder specifically designed for OpenStreetMap data. It leverages Elasticsearch or OpenSearch as its backend, providing a highly efficient, scalable, and powerful search platform. Developed by komoot, it offers a public demo server for users to try out its capabilities.

Key features include high performance, excellent scalability, and search-as-you-type functionality. It supports multilingual search, location biasing, and typo tolerance, making it robust for various applications. Photon also enables filtering by OSM tags, bounding boxes, and provides reverse geocoding to convert coordinates into addresses.

Installation is straightforward, with the photon-opensearch version recommended for new instances, requiring Java 21+. It supports continuous updates of OSM data, built upon Nominatim's import process, and can handle planet-wide datasets with significant disk and RAM requirements for optimal performance.