BestFit: Gym Workout & Fitness - The app provides individual training plans with an algorithm
Algorithm Visualizer - Write down your algorithm to be visualized
Quantiacs - Earn money by creating trading algorithms in your spare time
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.
Bytemine - A prediction and analysis platform for millennial investors.
Grokking Algorithms - An illustrated guide for programmers & other curious people