The long-awaited Selling Manager Applications platform has been launched to eBay sellers.

Selling Manager Applications, also known as SMApps and Project Echo (while in development), allows third-party developers to embed their own tools into Selling Manager - eBay's auction management tool within My eBay.

To access SMApps, sellers need a subscription to Selling Manager (free) or Selling Manager Pro. A new Applications tab will display existing subscriptions and allow sellers to subscribe to new applications.

The applications include solutions for sourcing products, shipping, customer support, inventory, research and reporting.

All SMApps are available with a free trial (usually between one week and 30 days) but most charge a subscription fee after the free period.

A directory of SMApps is available at on the Auction Software Review here: eBay Selling Manager Applications, and initially includes vzaar, OneSource, Terapeak, ahTXT, ezSupport for eBay, MyStoreMaps, MyStoreRewards, ShipRush.