Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.

BatteryCare - BatteryCare - Application and good practice guide for maintaining and optimizing the battery of the modern laptop

ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...

coconutBattery - With coconutBattery you are always aware of your current battery health. It shows you live information about the battery in your Mac and iOS devices (iPhone, iPad)

LightShot - The fastest way to take a customizable screenshot.

GSam Battery Monitor - Monitor your android devices battery usage.