• Friendica - Microblogging+. Facebook alt.

• The diaspora* Project (diasporafoundation.org)

• https://zotlabs.org/page/hubzilla/hubzilla-project

• https://lemmy.ml

• https://joinmobilizon.org/en/ - Focused on events and event management

• Mastodon quick start guide - https://joinmastodon.org/
• Pleroma - Microblogging.

• https://fedilab.app/ - A universal app that well connect to most of the Fediverse apps