When comparing NoSleep vs CheatSheet, the Slant community recommends CheatSheet for most people. In the question“What are the best Mac OSX apps for someone that's new to Apple?” CheatSheet is ranked 14th while NoSleep is ranked 26th. The most important reason people chose CheatSheet is:
As in price, not open source code.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Lets you close the lid of a laptop
The laptop will not sleep even if you close the lid, but the display will sleep. If your display cannot sleep, simply lower the brightness until it goes dark & turns off.
Pro Free
As in price, not open source code.
Cons
Con Discontinued development
Latest release was November 15th, 2014.
Con Non negligible processor ressources use
For such a tiny app, with a very limited function, idle most of the time, it actually is using non negligible processor ressources (frequently around 2% when not in use, and totalling more than Alfred, Dropbox or 1Password, for example).