Developer yllan released OS9Map, a dedicated client that brings OpenStreetMap functionality to legacy Mac OS 9 hardware. This tool allows users to browse maps, search for specific addresses, and save favorite locations. It bridges a massive gap for enthusiasts maintaining vintage PowerPC machines who want modern geospatial data on old software.

Technical requirements are modest, requiring a Power PC processor and at least 16 MB of RAM, though 32 MB is recommended for better performance. The app relies on Open Transport TCP/IP for internet connectivity. It uses a built-in Nominatim lookup to handle place searches, allowing users to jump directly to specific landmarks.

Navigation feels fluid thanks to a smooth scrolling canvas that loads tiles as the user pans with the mouse. Version 1.0.0 introduces the core zooming and bookmarking features. This project enables legacy hardware to interact with a modern web API through a native interface instead of relying on outdated browsers.

Users can support the project via Buy Me a Coffee. This release provides a functional mapping utility for a platform that has lacked software updates for decades.