Zmanda, the open source backup and recovery ISV, got an $8 million Series B round led by Helion Venture Partners with current backers BlueRun Ventures and Canaan Partners kicking in. The money is earmarked for R&D and business expansion. The company figures the traditional data protection market is ripe for commoditization. Zmanda got a $5 million first round in 2005.

MuleSource, which has an open source ESB and integration platform, raised $12.5 million in second-round financing with Lightspeed Venture Partners leading. The money is meant to scale sales and support. It had $4 million last October from Hummer Winblad and Morgenthaler Ventures when it launched. It wants to go from 25 people to 50 this year.

SnapLogic, which develops open source data integration solutions, got $2.5 million in funding from Dhillon Capital for further development and promotion. SnapLogic was set up in 2005 by Gaurav Dhillon, the founder and former CEO of data integration house Informatica. The start-up just released a beta version of its Internet Data Services solution.

The theory behind the company is to get integration to occur in the network by getting networked data sources to interact directly with one another leading to Internet-scale data services.