This is Project64K (core 1.4) from Smash64 allowing support for network play via Kaillera.

Project64K is a special version of Project64 the Nintendo 64 emulator including the Multiplayer game via the kaillera module, the additional p2p option, the AQZ option (plugin).

Added

– SmashRemix 1.3.1 to RDB
– 19XX 1.6 (TE, CE, & NE) to RDB
– Welsh translation, courtesy of Plague von Karma
– Experimental stream tool for Remix 1.2.0+
– Vanilla Japanese version would crash after a game
– [Beta] P2P NAT traversal support via autopunch v0.0.4
– Incorrect spellings of German words with umlauts and eszetts
– Automatic update checks, in the background
– Dedicated menu item for the updater
– Support for more external tools via Open Tools menu (coming soon!)
– Integrated Killer OP support (A popup will offer to close other KSE at launch)
– German translation, courtesy of u9verse

Fixed
– Potentially fixed Smash Remix crashing on open
– Windows 7: Updater crashing when opening
– Boomputer cheat was incorrect
– Kaillera windows will not disappear when changing monitors anymore
– Bug where Project64KSE wouldn’t close during update

Changed
– Removed « You must close the the Kaillera windows first » popup
– The ROM list automatically refreshes on launch
– Small status bar tweaks, FPS will only show ##.# now
– Made a few more menu items translatable
– Tweaked a few cheat notes

https://github.com/smash64-dev/project64k-legacy