I just saw Open Science Network https://openscience.network, developed by @Bonfire
(h/t @AvSchroeder)
It looks intriguing, but I'm not sure about yet another platform(at least for myself)...
Correction: A federated platform, not completely separated
But I'm interested in your thoughts, feelings and experiences!
(already saw mutuals in the "What researchers are saying"-section^^ @UlrikeHahn @fresseng @jorgeluis )