When comparing Mastodon vs Lemmy, the Slant community recommends Lemmy for most people. In the question“What are the best Social Networking Platforms?” Lemmy is ranked 2nd while Mastodon is ranked 3rd. The most important reason people chose Lemmy is:
Anyone can self-host the software on their own server. Users can join an instance they like. You can view and comment on other servers (instances) as long as the instance you are on hasn't blocked the other instance.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Social publishing
Private options.
Pro Actively developed
Pro Jabber Texting
xmpp
Pro Open Standard
Pro Open Source
Pro Federated
Anyone can self-host the software on their own server. Users can join an instance they like.
You can view and comment on other servers (instances) as long as the instance you are on hasn't blocked the other instance.
Pro Simple and fast interface
Pro Open-source
Pro Shows both number of upvotes and number of downvotes, not just total
If someone has some unpopular opinion you can still see some people upvoted it and therefore appreciated it (so you can decide to read it).
Pro Problematic instances can be blocked
If the moderation of a certain instance is not good, other instances can block it.
Pro A rich ecosystem of third party clients and software
See the awesome lemmy github repo.
Cons
Con Lacks OMEMO encryption
The de facto standard for Jabber Texting [xmpp].
Con Pro-CCP, Chinese censorship and concentration camp deniers
Con Complicated to use
Some find it quite difficult to use. As each instance is seperate, it take a lot to get used to using it.
Con Slow and unreliable
Con A community of leftist privacy and FOSS enthusiasts, run by Lemmy’s developers
Politically biased platform, that they seem to be proud of.