Facebook Local - Discover places to go and events happening near you
Haveyoubeenhere - The social media app for travelers
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
sup - The first creep-free way to see nearby friends
Summer AI - You're AI Guide to events and points of interest around you
NeoMutt - NeoMutt is a command-line mail reader. It's a version of https://alternativeto.