This title would have been far more useful to me if it said "Tools to Help you Focus and Increase Productivity as long as you are a Windows or MacOS user"
Apologies for my neglect of linux users. I do develop in Ubuntu (running on VMware) but since it's out of my comfort zone of XP or OS X, I usually find myself much less distracted when working in it.
If you have any suggestions for linux apps that help increase your focus I'd love to add them to the list.