http://sizeofaex6zgovemvemn2g3jfmgujievmxxxbcgnbrnmgcjcjpiiprqd.onion
You can install all the software you want, and all the games available for the PowerPC architecture and OS X 10.5 Leopard, but if you want to setup a development environment on a 20-years old machine, you will definitely need to jump through some hurdles. But in the end you will have a decent machine to write code (and test) on, unless you need specialized stuff like NodeJS, Docker, Golang, Redis, or things that require an octacore CPU and 64GB of RAM.