iA Writer - Minimal Design, Maximum Focus
Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.
MacDown - MacDown is an open source Markdown editor for OS X, released under the MIT License.
QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
MWeb - Pro Markdown writing, note taking and static blog generator
Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.