Pydev Extensions Open Sourced. The free and open source Pydev makes Eclipse a compelling Python development environment, and was useful on its own without the commercial product "extensions," but most people I know that used Pydev paid (or had their employer pay) for the extensions product. I never got into it enough to know what was worth what, but the confusion over the value and cost of the extensions discouraged me from trying. I'm pleased to see the free open source offering improved and simplified so significantly, and am more interested in giving it a chance.