Z64K Beta (2016/05/05) is released. Pixel exact emulation of the Commodore 64, VIC 20 and Atari 2600 written entirely in Java. The emulators should run on any platform with an updated java runtime environment installed.

Z64K Beta Changelog:
5 May - C64 Beta
Testbench - mountd64, mountcrt, ntsc,pal, ntscold and reu512k support. Reference screenshots are loaded if available.
Drafted C64/PC keyboard mapping picture(see above). I will improve it once I finally release a manual after the Beta version of C64 has all the minimal features implemented.

3 May - C64 Beta
Can save screenshots via the file menu. I will provide a shortcut option in next release.
Improved testbench interface. Still a work in progress. Designed for use with VICE test programs but could be customized for a custom program library. Screenshots are captured after each test and can be viewed via the tree navigation. Top panel on right shows the captured screen. Bottom panel on right is reserved for future development including forinteractive tests requiring a reference screen. You can run a single test by double clicking the test item in the tree navigation or use play in file menu to run all tests. See https://sourceforge.net/p/vice-emu/code/HEAD/tree/testprogs/testbench/ for more information.

Download: Z64K Beta (2016/05/05)
Source:Here