SprintWork Free (64-bit)

SprintWork is a foolproof social networks and website blocker that lets you block all online distractions and timewasters to allow you to focus on what is really important in your life. All while presenting you with detailed usage reports of programs, websites and total active computer usage time so that you can track and assess your progress and make the most out of the time spent on your computer.
SprintWork comes with a default block list of the most popular social networking websites like Facebook, Twitter and Instagram. You can add or remove any website you want from the list with support for wildcards to easily add or exclude possible variations or sub-domains of certain websites. Blocking lists can either be always enabled or you can choose to only enable them on certain times of day or days of week.