Tildes seems to be pretty interesting. It is developed by ex-reddit employee and is non-profit and open-source. Currently, it is in invite-only alpha. https://

Tildes seems to be pretty interesting. It is developed by ex-reddit employee and is non-profit and open-source. Currently, it is in invite-only alpha. https://blog.tildes.net/announcing-tildes https://blog.tildes.net/announcing-tildes