Please don't post about pirateing software. It is against our posting guidelines.
Amiga in a Box is legal to use, but needs Amiga OS. Amiga Forever is a good place to get all the classic version of Amiga OS and ROM files. Back to Roots and other sites have freely available abandonware games. Aminet is a good source of PD software. eBay and Amiga dealers if you want commercial software.
What kind of programs would you be looking for?
