Connect your MacOS 9 to OSM, BlueSky and Mastodon

yllan

New Tinkerer
Jun 15, 2026
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Hi,

Please allow me to do a bit of self-promotion here for some programs I’ve been developing recently. It’s an experiment to help MacOS 9 connect with the modern internet environment, building on the hard work of those who came before me.

First of all, because MacOS 9 does not have a modern crypto library, it cannot connect to modern TLS services. I referred to the mbedTLS OS9 port and created a library called ClassicNet that supports HTTP/2.

OS9Map.pngOS9Map uses this library to allow Macs to connect to OpenStreetMap, as well as search for addresses and POIs.
OS9Map-screenshot.png


The next step is unicode. Unicode on OS9 is not well supported. To render a big part of Internet, I created ClassicText for emoji.

PlatinumSky.pngPlatinumSky is the OS9 app for BlueSky, and
Palaeomastodon.pngPalaeomastodon is the OS9 app for Mastodon.


PlatinumSky-screenshot.png


Not really helpful for productivity, but it feels nice to connect the old MacOS 9 to the modern internet!

yllan
 
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