Altirra v3.20 Test 3 is released. Altirra is an Atari 8 bit Emulator on the Windows/DOS platform. Altirra emulates several models of the 8-bit Atari computers. This includes the the 800, 800XL, and 130XE versions. It has a lot of options, and compatibility is decent especially given the emulator's early stages. It also supports some copy protected games properly in emulation.

http://virtualdub.org/altirra.html

via http://www.emucr.com/2018/10/altirra-v320-test-3.html