Z64K (2019/04/07) 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 Changelog:
Fixed bug introduced on 22/11/2018 when SID envelope underflows. Hang drum sounds much better now.
Disabled extra pixel in VDC 40 column bitmap mode

Download: Z64 (2019/04/07)
Source:Here