Marin Software, a startup that creates search engine management software for advertisers and agencies, has secured $13 million in Series C financing led by DAG Ventures, with Focus Ventures, Benchmark Capital and Amicus Capital participating. Marin received $7.25 million in Series B funding in 2008 led by Benchmark Capital. The company also received $2.5 million in Series A funding from Amicus Capital in 2006.

Marin Software offers a browser application to help advertisers and agencies managing paid search advertising campaigns across Google, Yahoo, MSN and other search sites. Marin’s software is used by Razorfish, ZipRealty and other companies. Marin’s customers spend at least $100,000 per month on paid search campaigns across the major search engines.The company’s main competitors include Kenshoo and Refined Labs.