Acutal reverse timeline, to whom it may concern:
- Musk bought Twitter in 2022.
- ActivityPub was acknowledged a standard in 2018.
- Mastodon is from 2016.
- Hubzilla is from 2012.
- Friendica is from 2010. Actually several months older than Diaspora*.
- As early as 2008, we already had something called StatusNet with a huge instance named identi.ca.