
After reading the topic "
How to protect yourself from time-sink sites? " I immediately remembered one of the most necessary programs, which really helped me when I was working under Mac OS X.
Meet -
Concentrate .
This program allows you to focus on work, banning everything that hinders: websites, programs. Can automatically put the status in IM. Conversely, run the necessary programs and execute scripts.
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From the settings, you can build configs that can be useful: for example, if you are writing code, you have nothing to do on deviantart.

We select a config, and how much you want to do business - and productivity increases.

PS If someone advises an analog under Win - I will be very happy. Chrome plug-ins do not offer.