Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
InterPals - InterPals is a friendly community of over 5 million friends, language learners, travelers and penpals.
Event Hunt - Startups and Tech Events Curated By Locals
PenPal World - Connect with people all over the world
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Random PenPals - Get a quarantine PenPal in 10 seconds