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.
Workrave - Workrave is a program that assists in the recovery and prevention of Repetitive Strain Injury (RSI).
Nifty - Manage projects, work, and communications in one place.
SmartBreak - Apps and tools from InchWest are designed with one goal - to increase your productivity and improve your experience on MacOS, Windows and iOS devices.
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
StretchMinder - Work break timer with guided movement & breathing exercises