Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
TextMe - TextMe is a free calls and messaging application at both local and international levels.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Talkatone - Android App on. Google Play. Stop paying for cell minutes, texts & landlines; Turn your iPad or iPod touch into a phone; Call/Text even in areas with bad cell coverage; Call/Text when travelling without paying for expensive international minutes.
LightShot - The fastest way to take a customizable screenshot.