Experify - Connecting you to owners of products for honest opinions.
And We Evolve - Subscription box for stylist-picked secondhand clothing
Pattern by Etsy - Turn your Etsy shop into your own website
Trove Market - The easiest way to buy/sell used + vintage furniture
Whatnot - The safest place to buy & sell collectibles
Wallapop - Wallapop is a free mobile app that acts as a virtual flea market for buying and selling items locally.