Algorithm Visualizer - Write down your algorithm to be visualized
VisualSitemaps - Autogenerate visual sitemaps in seconds.
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.
Grokking Algorithms - An illustrated guide for programmers & other curious people
FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
The Algorithm Design Manual - Learn about designing and analyzing algorithms