OS9Map
Points and comments are a snapshot, not live.
OS9Map lets you browse OpenStreetMap on Mac OS 9 with search and bookmarks.
OS9Map is a native OpenStreetMap client for Mac OS 9, requiring a PowerPC processor, 16-32 MB RAM, and an internet connection. It supports smooth scrolling, place search via Nominatim, and bookmarks. Version 1.0.0 was released on June 21, 2026.
What commenters are saying
Commenters praised the achievement, noting that OS 9 lacks modern protocols like TLS and JSON parsing, making the project particularly impressive. Several shared their OS 9 hardware setups, from PowerBook G4s and Mac mini G4s to heavily upgraded G4 towers with dual 1.8 GHz processors and 2 GB RAM. The author revealed the project is part of a series including clients for Bluesky and Mastodon, developed using QEMU rather than real hardware. Some expressed interest in seeing the source code and technical details.