Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Launchcloud - Data collection & automation made simple.
TaskBoard - A Kanban-inspired app for keeping track of things that need to get done.
Plagiarism Checker by C.A Apps - Plagiarism Checker is an educational app by C.A Apps comes up with features to allow users to instantly check their articles for plagiarism.
My Personal Kanban - This is a one page HTML/JavaScript application for people who would like to use simple and basic...
Auto-PDF - Web-based PDF form automation