Social planning websites

Facebook is an American social networking service owned by the American technology conglomerate Meta Platforms. It was founded in 2004 by Mark Zuckerberg, along with his Harvard College roommates and fellow students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. The name Facebook derives from the face book directories often given to American university students.

Airbnb, Inc. ( , an abbreviation of its original name, "Airbed and Breakfast") is an American company operating an online marketplace for short-and-long-term homestays, experiences and services in various countries and regions. It acts as a broker and charges a commission from each booking. Airbnb was founded in 2008 by Brian Chesky, Nathan Blecharczyk, and Joe Gebbia.

CouchSurfing is a hospitality exchange service by which users can request free short-term homestays or interact with other people who are interested in travel. It is accessible via a website and mobile app. It uses a subscription business model, and while hosts are not allowed to charge for lodging, members in some countries must pay a fee to access the platform.

Meetup is an American social media platform and social networking service for hosting and organizing in-person and virtual activities, gatherings, and events for people and communities of similar interests, hobbies, and professions. The service has 60 million users. The company has both free tiers and paid tiers.

Eventbrite is an American live events marketplace and website. The service allows users to browse, create, and promote local events. It is free to publish unlimited events of any size on Eventbrite.