limewire aint touchin soulseek and it has people building alt.clients https://nicotine-plus.org https://github.com/slskd/slskd (though these are not

limewire aint touchin soulseek and it has people building alt.clients https://nicotine-plus.org https://github.com/slskd/slskd (though these are not webapps, which was your main shtick i'm sure)