The best alternatives to Dastyaaaar are Forest, Hocus Focus, and Rooster. If these 3 options don't work for you, we've listed a few more alternatives below.
TL;DR: Rooster is a Chrome extension that helps you stay focused and productive while working online by giving you insights on your browsing habits and by notifying via Push-notifications you when you lose your focus.
Progress Dashboard replaces your boring chrome new tab with powerful & customizable time progress bars to keep you productive! Highly inspired by year progress tweets.