Philadelphia-based online directory platform provider 7 Mainstreet has added a new independent publisher to its roster of partners. The company announced recently that Austin, Texas, based Southwest Business Directories to its client roster. 7 Mainstreet now powers Southwest’s online directory, found at www.myaustinpages.com.

Back in March, BIA/Kelsey profiled 7 Mainstreet on the Local Media Watch blog. What sets the company apart is its infusion of e-commerce and social media tools into a package that directory publishers and other traditional local media players can resell to local businesses.

7 Mainstreet is run by the father and son team of Ron and Andy Leff. The company is is pitching directory publishers, newspapers, catalogs and business-to-business publishers, among others, to white label its solution as a platform for selling online advertising and services to small-business advertisers. In particular they’ve focused on the independent publisher space and to date have announced one other client, Illinois-based Eagle Publications.