OfferUp

OfferUp is an American online marketplace operating a mobile-first consumer-to-consumer (C2C) platform for buying and selling primarily used goods, with an emphasis on local, in-person transactions. Founded in 2011 by Nick Huzar, former co-founder and CTO of Konnects, Inc., and Arean van Veelen, the company is headquartered in Bellevue, Washington and serves the United States. The service is available via iOS and Android apps as well as the web.

The product is optimized for smartphones: sellers can list an item by uploading a photo from a phone or computer, and buyers browse large product images in an infinite-scroll interface, with listings surfaced by proximity to the buyer and filterable by category, price, and distance. In-app messaging lets buyers and sellers communicate without exchanging email addresses or phone numbers, and seller inquiries can be sorted by highest bid. Trust and safety features include TruYou verification, Community MeetUp Spots, verification badges, review attributes, average response time, and trusted connections; the company has said surveys showed women in particular were hesitant to transact because of safety concerns. Transactions are completed in cash or through OfferUp's in-app payment platform, and nationwide shipping is offered. Top categories cited include toys, furniture, and cars; during the early COVID-19 period the company reported increased activity in video games, electronics, games and toys, and appliances.

In March 2020 OfferUp announced the acquisition of rival letgo's classifieds business alongside a $120 million funding round led by letgo majority investor OLX Group, with OLX taking a 40% stake in the combined entity. The two marketplaces were merged into a single app on August 31, 2020; letgo users transferred their account reputation but had to repost listings, some letgo categories (jobs, services, rentals, gift cards) were dropped, and letgo's Canadian service was discontinued. Letgo's business outside North America remained with OLX Group.