thrift
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Retrofit
Retrofit is an AI-curated vintage marketplace that uses AI agents to sift through hundreds of thousands of secondhand listings, analyzing social media trends, sales data and personal style to surface pieces matched to a shopper's taste, size and budget. Founded in 2024 by Sandra Lifshits and Maddy Yip and backed by Y Combinator (W25), it standardizes photography and descriptions from partner vintage stores so shoppers get a clean, personalized feed instead of endless digging.
Goodwill Industries International
Goodwill Industries International is the umbrella organization for a North American network of about 150 autonomous, community-based Goodwill nonprofits. Founded in Boston in 1902 by Methodist minister Edgar J. Helms, it runs the classic model of collecting donated clothing and household goods, reselling them through thrift stores and, increasingly, online, and using the proceeds to fund free job training, career services, and support programs. The parent body sets brand standards, coordinates national partnerships, and runs shared initiatives such as the online marketplace GoodwillFinds and the Goodwill Digital Career Accelerator, while local members deliver services on the ground.
ThredUp
ThredUp is one of the world's largest online resale platforms for secondhand women's and children's apparel, shoes and accessories. Founded in 2009, the Oakland-based company combines automated distribution centers, a managed marketplace, and a 'Resale-as-a-Service' (RaaS) platform that powers branded resale programs for major retailers. It went public on Nasdaq in 2021 under ticker TDUP and frames its mission around extending the life of clothing to reduce fashion's environmental footprint.