# Lemmy (social network) | ![img \|150](https://upload.wikimedia.org/wikipedia/commons/thumb/5/52/Lemmy_logo.svg/320px-Lemmy_logo.svg.png) | Lemmy is free and open-source software for running self-hosted social news aggregation and discussion forums. These hosts, known as "instances", communicate with each other using the ActivityPub protocol. | | ---- | ---- | | | wikipedia:: [Lemmy (social network)](https://en.wikipedia.org/wiki/Lemmy_(social_network)) | | | url:: [Lemmy](https://join-lemmy.org/) |