Quantiacs - Earn money by creating trading algorithms in your spare time
CSS Grid Garden - A game for learning CSS grid layout
CodeAnalogies - Visual explanations of web development topics
State.of.dev - Visualizing the current state of development
BestFit: Gym Workout & Fitness - The app provides individual training plans with an algorithm
Algorithmia - Algorithmia makes applications smarter, by building a community around algorithm development, where state of the art algorithms are always live and accessible to anyone.