eBay's Project Echo is out of beta testing and has been renamed "eBay Selling Manager Applications" (SM Apps).

SM Apps allows third-party developers to embed their applications directly into eBay's web-based auction management tool Selling Manager.

The launch to sellers is scheduled for the week beginning June 15, as part of a major raft of changes. Initial third-party applications will include Terapeak's research tool, Hosted Support's customer support solution, shipping solutions, and more. Some applications will have one-off or recurring fees, while others will be free.

Subscriptions and billing for SM Apps will be handled by eBay, who are waiving a revenue share component until 2010 for developers whose applications are ready for the initial launch to sellers. Further information for developers.