ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Niice - Show what your brand is made of - Niice helps in-house creative teams create, grow and manage their brand.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Ledavio - Moodboards a step beyond
LightShot - The fastest way to take a customizable screenshot.
Moodboard - Share ideas with a link!