Z64K Beta (2016/05/23) 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:
23 May - C64 Beta
Fixed some keys not being recognised in full screen mode. TAB==> CTRL works in full screen mode now.
Full screen mode supports variable scan lines - Testbench tests that change the VIC-II type automatically resizes if executing in full screen mode.

21 May - C64 Beta
Full Screen mode is marked as stable now!! :)
Improved performance of drawing to screen in full screen mode.
Option to choose refresh rate and color depth for full screen mode.


Download: Z64K Beta (2016/05/23)
Source:Here