The blogging platform #Plume aims to be a federated open source alternative to #Medium, and is under active development.
It's still at a pre-Alpha stage, but you can get regular updates from the lead developer at @BaptisteGelez (the account is on a Plume instance but it federates through #ActivityPub, so you can follow it on Mastodon etc).
There's a demo Plume instance at:
Developers can find out more here:
 
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switching.social fridaysforfuture, but everyday
fridaysforfuture, but everyday All Jonkman Microblog content and data are available under the
 All Jonkman Microblog content and data are available under the