OSBC last week provided an opportunity for three open source funding announcements (MuleSource, Zmanda, and SnapLogic), and real-time Linux vendor Concurrent announced a sale of common stock the week before. Here are the details…

MuleSource: May 22nd funding announcement (press release) of $12.5m in Series B led by Lightspeed Venture Partners. The company raised its initial $4m Series A last year from Hummer Winblad Venture Partners and Morgenthaler Ventures. MuleSource maintains the popular open source ESB, Mule, and is focused on open source options for integration and SOA.

Concurrent: May 16th funding announcement (press release) of an estimated $14m through a common stock sale. Concurrent is a public software company (Nasdaq: CCUR) in the high performance computing space. The company provides the real-time technology for Novell SUSE Linux Enterprise Real Time and also markets its own real-time Linux distribution called RedHawk.

Zmanda: May 22nd funding announcement (press release) of $8m in Series B by Helion Venture Partners, BlueRun Ventures, and Canaan Partners. Zmanda is an open source backup and recovery software company. The company offers a multi-use backup and recovery product called Amanda, and one specifically tailored for MySQL, the Zmanda Recovery Manager (ZRM) for MySQL.

SnapLogic: May 22nd funding announcement (press release) of $2.5m in initial funding from Dhillon Capital. SnapLogic officially launched last week, and is focused on the data integration space with an open source beta release available for download. I met with SnapLogic CEO Chris Marino at OSBC last week in San Francisco.