Wikipedia
ShipWorks is a product by the St. Louis, Missouri based Interapptive Inc. It is a multi-carrier shipping software that integrates online sales and marketplace systems including eBay, Etsy, PayPal, Amazon, and Yahoo. The software provides direct support for many US based carriers including DHL Global Mail, FedEx, UPS, USPS, Stamps.com, Endicia, Express 1, OnTrac, uShip and i-Parcel, however integration with non-US based shipping accounts is incomplete.
ShipWorks was founded by Wes Clayton, Co-CEO and COO, and Brian Nottingham, Co-CEO and CTO.
The company is located at the top floor of the Gateway Tower in downtown Saint Louis with a view on the Gateway Arch and the Busch Stadium, home of the St. Louis Cardinals Major League Baseball team.
Stamps.com acquired the company on October 20th 2014 for $22 million