Grover - Rent electronics for a month & try it before you buy.
Olapic - Olapic is a visual marketing platorm.
Shelf Engine - Vendors get paid for only products they sell
Soldsie - Soldsie is a social commerce platform that allows customers to purchase products through comments on Facebook, Instagram, and Pinterest.
Origin Marketplace - Power hundreds of decentralized, peer-to-peer marketplaces
Boo.st - Buy and sell everywhere using #hashtags.