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.
Vendoo is a crosslisting and inventory-management platform for online resellers. From one dashboard, sellers post a single item to 10+ marketplaces - eBay, Poshmark, Etsy, Mercari, Depop, Facebook Marketplace, Grailed, Vinted and more - and the software handles the repetitive parts: detecting a sale and auto-delisting the item everywhere else, tracking inventory, sending offers, and calculating fees and profit. Founded in 2017 and part of Y Combinator's Winter 2022 batch, Vendoo says it serves more than 81,000 resellers who have created over 26 million listings on the platform.
Dagne Dover is a New York-based direct-to-consumer accessories brand founded in 2013 that designs hyper-functional bags - backpacks, totes, diaper bags, and luggage - engineered around organization and everyday problem-solving. Built by three women who bootstrapped rather than chasing venture capital, the brand is known for its signature neoprene 365 Collection, recycled Repreve linings, and an 'Almost Vintage' resale program that extends the life of its products.
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.
Novelship is a Singapore-based online marketplace for buying and selling authentic sneakers, streetwear, apparel and collectibles across Asia-Pacific. Founded in 2018, it connects buyers and sellers through a bid-and-ask model, verifies every item in-house before it ships, and has grown into one of the region's largest platforms for limited-edition drops from brands like Nike, Jordan, Adidas, New Balance and ASICS.
Curtsy is a mobile-first, peer-to-peer resale marketplace where Gen Z and young millennial women buy and sell secondhand clothing, shoes and accessories. Founded in 2016 and originally a dress-rental service, it pivoted to resale and built its edge around making listing fast for casual sellers - using machine learning to suggest prices, fill in item details and estimate shipping weight, backed by human review. Sellers keep more of their money than on rival platforms (a ~19-20% commission), buyers save up to 70% on brands like Lululemon, Free People and SKIMS, and the app carries a 4.8-star rating across tens of thousands of reviews. Curtsy raised an $11M Series A led by Index Ventures in January 2021, part of $14.5M total funding.
Flyp is a San Francisco software company that builds affordable, all-in-one tools for online resellers. Its Crosslister moves a single listing across Poshmark, eBay, Mercari, Depop, Etsy and Facebook Marketplace, while its Poshmark bot automates closet sharing, offers to likers, follow/unfollow and CAPTCHA solving. Founded in 2018 by James Kawas and Dani Arnaout, Flyp positions itself as the enterprise-grade toolkit for the roughly hundreds of thousands of 'power resellers' who move used goods for a living - at $9/month after a long free trial, undercutting rivals that charge $100+.
Yidi Campbell is the founder and CEO of Indyx, a San Francisco connected-wardrobe platform that lets people catalog, style, and resell the clothes they already own. A Georgetown business graduate, she moved from investment banking at Credit Suisse to corporate development at Gap Inc. and strategy at Athleta before launching Indyx in 2021 to fight fashion overconsumption from the closet outward.
Revive (stylized (Re)vive) is a New York fashion-tech company that turns returned, damaged, and excess apparel into recovered revenue for brands. Its AI-powered platform inspects each item in minutes to flag damage type and resale potential, then cleans, lightly repairs, and routes goods back to stores or onto resale channels - so unsellable inventory becomes profit instead of landfill. A Certified B Corp, Revive has recovered roughly $23M in gross merchandise value and kept over 150,000 garments out of landfills.
EON is a New York-based enterprise software company building the Digital ID layer for physical products. Through its EON Product Cloud platform, brands give each item a unique, traceable digital identity - accessed via QR code, NFC chip or RFID tag - that follows the product across its full lifecycle, powering resale, repair, authentication, customer engagement and compliance with the EU's upcoming Digital Product Passport regulation. Founded in 2017 by Natasha Franck, EON authored the open CircularID Protocol and works with brands including Coach, Chloe, H&M, Mulberry and Target.
Natasha Franck is the founder and CEO of EON, a New York company giving every garment a unique Digital ID so it can be traced, resold, repaired and authenticated across its entire life. She left a career in urban planning and smart cities to build the CircularID Protocol, an open standard now powering Digital Product Passports for brands like Coach's Coachtopia, Chloe and Mulberry, and feeding into EU regulation that will make these passports mandatory.
eBay is one of the original internet marketplaces, a global platform where roughly 136 million buyers shop across hundreds of millions of listings in about 190 markets. Born in 1995 as a hobby site called AuctionWeb, it pioneered the idea that strangers could trust strangers enough to trade online. Three decades later it has reinvented itself around enthusiast categories, certified collectibles, and recommerce - selling the new, the rare, and the gloriously second-hand.
James Reinhart is the co-founder and CEO of ThredUp, the publicly traded online resale marketplace he started from a too-small Cambridge closet in 2009. A former history major and charter-school operator turned operator-of-warehouses-full-of-other-people's-clothes, he has spent over fifteen years arguing that secondhand isn't a niche, it's the future of fashion.
Archive is the technology platform behind brand-owned resale. It builds and operates customized secondhand storefronts for fashion and lifestyle brands - including The North Face, New Balance, Oscar de la Renta and Dr. Martens - so they can keep products in circulation, capture a new revenue stream, and meet customers who increasingly refuse to buy new.

Emily Gittins is the Co-founder and CEO of Archive, a B2B SaaS platform that powers branded resale programs for 50+ global fashion companies including The North Face, New Balance, and Oscar de la Renta. A Cambridge mathematics graduate turned Stanford MBA, Gittins built Archive after stints at BCG, Google X, and the Global Fashion Agenda, channeling her technical background and sustainability conviction into a company that has raised $76.9M - including a $30M Series B in February 2025 - and been named one of Fast Company's Most Innovative Companies of 2024.

Krzysztof Marzec is Co-Founder of Trove, the branded recommerce platform powering more than 75% of the U.S. branded resale market. Originally founded as Yerdle in 2012 and rebranded to Trove in 2016, the company has raised over $153 million in funding and serves clients including Patagonia, Levi's, Lululemon, Canada Goose, and Carhartt. With a background spanning commodity futures trading at Geneva Trading USA and early-career roles at Northern Trust and Morningstar, Marzec brings a rare blend of financial markets discipline and entrepreneurial technology vision to the fast-growing recommerce sector.
Trove is the Oakland-based recommerce platform that powers branded resale and trade-in programs for retailers like Patagonia, Levi's, Lululemon, REI, Canada Goose, and Carhartt. Its software, operations, and AI-driven pricing engine turn used goods into a profitable new sales channel, helping brands extend product life and capture value from items already in customers' closets.
Vacatia is a hospitality company reinventing the timeshare experience. It runs a marketplace for buying, selling, and trading vacation ownership interests, and increasingly manages the resorts behind those interests - bringing modern booking technology and owner services to a category that hadn't seen much of either.