@ahanon What function does academia.edu perform for you? Networking, collaborative writing, ...
For the former we have a number of Mastodon instances, although normally not enough scientists to have someone with sufficient expertise to talk to.
If you are looking for open science tools in general: I maintain the @OpenScienceFeed
yes. its, not just science papers but Any - including other books and texts.
Also, there's the possibility to discuss and socialise to a lesser extent.
There's https://www.researchgate.net/ which is another for profit venture.
A more social oriented attempt, imho, is
Though that's a bit complicated to use and not #federated at all
I am building a system for the post-publication peer review of articles. @GrassrootsReview
This should ingest information from many open science systems and distribute the peer reviews again. I plan to make it compatible with ActivityPub, but most open science systems use bespoke APIs.
The reviews are done in small scientific communities. For my own community we have a distribution list, conference list & online colloquial.
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