Many releases are still not listed here, and there are quite a few of unofficial releases, remixes, etc out there. There are people who have stolen material by Noise Nazi and published it as themselves and or a collaborative effort with NN, which are not official or recognized.
Side projects include -
Syphilic Genital Worm : (Goregrind/Cybergrind from 2002)
Grand Cyclops : (KKK Themed Industrial / Harsh Noise)
Schnur : (Industrial Using Only Machinery Sounds As The Main Source)
Glotzer : (Industrial/Noise Project That Collaborates With New Artists For Each Release. All Releases Are Then Mixed And Developed By Matthew Bonk).
Any other artist or release claiming to feature Noise Nazi or has worked with Noise Nazi is most likely a fraud and not true.