Some marketplaces sell things that have been owned before:

• the dress sold by the person who wore it
• the limited-edition sneaker, traded like a share
• the second-hand phone, bike or car, listed in the classifieds

What these marketplaces really sell is trust between strangers. The buyer of your bike wants to know it is what the ad says it is, that the price is fair, and that paying is safe. So the marketplace offers authentication, checking that an item is genuine and not a fake. It offers a price guide. And it can hold the payment until the item arrives, which the industry calls escrow.

What a resale marketplace sells is trust between strangers: it checks that the item is genuine, gives both sides a price guide, and holds the buyer's payment in escrow until the item arrives.

Every company named here has posted software engineering jobs in India. Famous companies that don't actively hire software engineers in India are left out. This Market Segment has six such companies. Most of them are foreign, and several of them build a large share of their product in India.

This Market Segment has one sub-segment, covering all six.