The Flipkart PHP SDK by Saneem unofficially interacts with the Product Feeds API. It provides authentication and callbacks. A live demo is available at http://www.clusterdev.com/flipkart-api-demo/demo.php
After a decade of helping sellers list items on eBay, power seller software maker Auctiva is launching its own marketplace. Or, more accurately, it's launching a platform, named AMP, where anyone can create a marketplace. Auctiva and its partners have 500,000 products ready to be included in any store via its API (our new AMP API profile).