Uppsala.Social is a community-driven, non-profit web tool to find and organize social events, activities, and groups of like-minded people in Uppsala city and surroundings based on the open-source software "MOBILIZON". You can use the website in your favourite browser or as a Progressive Web App (PWA) on your mobile phone (for details go to "About" page below). You can also receive posted events by a group on uppsala.social by following the group (and setting the notification alarm) on the MASTODON network.