SprintWork is described as 'effective distraction blocking and time tracking software that can help you get work done on time and recover valuable time lost to social media and games' and is an app in the Office & Productivity category. There are more than 25 alternatives to SprintWork for a variety of platforms, including Mac, Windows, Android, Google Chrome and Linux. The best alternative is Cold Turkey, which is free. Other great apps like SprintWork are Forest (Freemium), FocusMe (Paid), Freedom (Paid) and StayFocusd (Free).
Freedom is an application that disables networking on an Apple computer for up to eight hours at a time. Freedom will free you from the distractions of the internet, allowing you time to code, write, or create.
SelfControl is a free and open-source application for Mac OS X that lets you block your own access to distracting websites, your mail servers, or anything else on the Internet. Just set a period of time to block for, add sites to your blacklist, and click "Start.
Focus is a Mac app that blocks distracting websites (like Facebook and Reddit) and applications, so you can improve your productivity. It has lots of awesome features like scheduling, showing motivational quotes on blocked pages, whitelisting and pomodoro support.
Iris is software which makes monitors healthy for the eyes. With iris you can reduce the blue light emitted from your screen for better sleep, reduce the brightness of your screen without PWM and avoid eye pain.
BrowseControl is an agent-based web filter that blocks websites based on URLs and categories. Internet use quotas can be set based on schedules and timers. Includes a port filter and Windows application blocker.