So many meetings, so little time. With the amount of remote teams spread out all over the globe while working together on projects, it's amazing anything gets done. The advent of Web conferencing has made group collaboration a lot easier and, for some businesses, it's the only way to keep everyone on the same page. Let's take a look at some popular open source Web conferencing apps that keep everyone chatting happily while they get things done.

We've covered Dimdim a lot here at OStatic. It's a full-featured free Web conferencing app that raised $6 million in Series B funding last year and has taken aim at expensive commercial options like Cisco System's WebEx and Microsoft's Placeware. Up to 20 people at a time can get together withDimdim's free version which also includes audio and video sharing, event recording, whiteboards, and private messaging.