We've just created this mastodon account to communicate about the #unifiedpush project.
UnifiedPush is specifications and tools that let mobile users choose how push notifications are delivered. All in a free and open source way.
Then it can quite easily be an unifiedpush distributor : it just misses the distributor interface to forward notifications to applications implementing the connector interface.
For linux, the specifications are here : https://github.com/UnifiedPush/specifications/blob/main/specifications/dbus.md
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.