I was not surprised that Azavea and Seer Interactive once again landed on the 2013 Inner City 100 list of the fastest-growing businesses in cities that lag their wider metro areas economically.

The two Philadelphia information-technology companies have appeared on this national ranking by the nonprofit Initiative for a Competitive Inner City previously.

But I was happy to see that four other small Philadelphia firms produced enough revenue growth between 2007 and 2011 to make the City of Brotherly Love the second-most popular address behind Chicago for this measure of metropolitan entrepreneurial activity.

Here are the local firms that learned where they ranked nationally at an awards program in Boston last week:

Sovereign Security L.L.C., a minority-owned provider of security personnel and services, was No. 11. Based

at Seventh and Market

Streets, the firm was founded in 2004 by Richard Cottom, Drexel University's former

vice president of public

safety. Its compound annual growth rate for revenue

was 70 percent between 2007 and 2011.

PrintFresh, a textile design studio in Kensington, was No. 23. Started in 2006, by designers Amy and Leo Voloshin, the company's customers include H&M, Urban Outfitters, and Zara. Its growth rate was 46 percent.

Vynamic L.L.C., a health-care consulting firm focused on strategic planning, was No. 27. Located at 1600 Arch St., it was founded by Dan Calista in 2002 and reported a growth rate of 39 percent.

Seer Interactive, a search-engine optimization firm, was No. 34, after placing at No. 25 on the 2012 list. Founded by Wil Reynolds in 2002, the 60-employee business is based in Northern Liberties and had a 2007-11 growth rate of 36 percent.

Recovery Networks, a provider of disaster- recovery services using cloud-based strategy, was No. 45. Based at the Navy Yard in South Philadelphia, the company was founded in 2005 by Tom Dugan and reported a growth rate of 26 percent.

Azavea, a developer of Web and mobile software applications, was No. 79. Founded by Robert Cheetham in 2003, the 30-employee firm is based at 12th and Callowhill Streets and produced a growth rate of 15 percent.

Quite a diverse group of businesses. For the full list, go to www. fortune.com/innercity100.