Open source Web meeting company Dimdim has just raised a $6 million Series B round of funding, led by existing investors Index Ventures, Nexus India Capital, and Draper Richards, out of the US, Europe and Asia. Having launched its private beta nearly a year ago at DEMOfall 2007, Dimdim’s open source Web meeting project has grown to reach hundreds of thousands of users, and has been downloaded a reported 250,000 times.

Being an open source project, Dimdim is also free for users, providing an alternative to other Web-based conference tools that dominate the space. Dimdim features the tools you’d expect from a prominent Web-based conference tool, including the ability to share desktops, chat and broadcast via webcam. While Dimdim hasn’t released any specifics about what the latest round of funding will go towards, the company plans on building out its feature set, and further marketing its service. That means working closely with developers and potential user bases to find better ways in which to implement its free service.

In its efforts to defeat the likes of WebEx, Dimdim has promoted the cost-efficient aspects of its open-source product, and has been steadily rolling out a series of updates to go along with this. The latest, Project Eagle, was a direct offering to the developer community. The result has been some interesting applications that aren’t even tied in with business use for Web meetings.

As Dimdim expands its marketing efforts and seeks out more users, I think a focus on the non-business demographic could be beneficial, especially as chat platforms are being leveraged for multimedia communication purposes. VoIP services like Jajah have found a road to expansion with increasingly deep integration with other social media and networking sites, and I think Web meetings have reached a point where this is useful as well.

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