Lemmy is a free, open-source link aggregator and discussion forum for the fediverse, built as a self-hostable alternative to Reddit. Communities live on independent servers that federate over ActivityPub, so you can subscribe to them and post from whichever instance you join.
Lemmy
join-lemmy.org/instances
Our take
The most active Reddit-style corner of the fediverse, and the realistic landing spot if you want threaded communities without one company owning the platform or mining your activity. The catch is scale and fragmentation: communities are smaller and scattered across instances, and the server you pick shapes what you see, since some instances block others. Pick Lemmy if you want self-governed forums and will help seed the communities you miss; skip it if you need Reddit’s sheer breadth on day one.
GitHub at a glance
LemmyNet/lemmy
Stars
14,451
