KanbanFlow - KanbanFlow is a Lean project management tool allowing real-time collaboration between team members. Supports the Pomodoro technique for time tracking.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
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.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Kantree - Kantree is an adaptable and intuitive project manager for the enterprise.
LightShot - The fastest way to take a customizable screenshot.