KSP Atlas

http://steen.free.fr/cyrpol/ this is the one I used

Also, Cyrillic can represent features like palatalization better than the Latin alphabet does, not saying it’s the best for everything but it does have advantages

Slavic languages are related to other European languages closer than Finnish and Hungarian, also the writing system Cyril introduced was Glagolitic, the reason Cyrillic appeared was because students in Bulgaria didn’t want to use the rather complex glagolitic alphabet for everything and already knew the greek alphabet, so they kind of combined them and created Cyrillic

Фєк энд ґє

Are you talking about the one made by the same person as Interslavic?

Любѩ тѫ ортографе, дяла добре з Польским