Among open source applications, there are an increasing number that focus on boosting productivity. Pervasive themes throughout the world of technology--such as collaboration online--are heavily influencing that. Open source tools focused on productivity include useful Firefox extensions such as iMacros (which lets you record repetitive, multi-step tasks and then execute them with one click) and full-blown collaboration platforms. Here, you'll find our updated list of six productivity enhancement tools. Everything found here is free.