FitPub is described as 'Self-hosted fitness tracking platform for the Fediverse. It lets people upload workout files, review their activities with maps and metrics, and share them through ActivityPub instead of locking them into a closed social network' and is an website in the sport & health category. There are five alternatives to FitPub, not only websites but also apps for a variety of platforms, including Android, iPhone, Apple Watch, Android Wear and F-Droid apps. The best FitPub alternative is Runbuds, which is free. Other great sites and apps similar to FitPub are FitoTrack, Strava, Nike Run Club and Garmin Connect.