Nintaco (2018/12/29) is released. Nintaco is a work in progress. It is a NES-Famicom-Dendy emulator written in Java 8, ostensibly making it cross-platform. The full source will be made available per LGPLv2.1.

Getting Started
If double-clicking the jar does not automatically launch the emulator, try: java -jar Nintaco.jar
Configure input: Options | Button Mapping...
If you are using an 8 button controller, such as a USB NES gamepad, try mapping Rewind Time to Start + B.
If you want to resume at arbitrary points in the past: Tools | Watch History... and Resume Here

Nintaco (2018/12/29) changelog
Show | More Than 8 Sprites Per Scanline now works properly with the commercial games that use excess sprites for masking.
Save Screenshot now functions correctly when the emulator is paused.
Fixed a Program Server Controls bug where termination of the remote API client could cause the emulator to freeze.
Fixed a Debugger issue where loading save states inhibited the creation of breakpoints.
Fixed a keyboard shortcut problem where Alt+# (resize) interfered with # (quick load state).
Fixed a Netplay Server Controls glitch where a checkbox was not disabled on server start.

Download: Nintaco (2018/12/29)
Source:Here