Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Viber - Free and secure calls and messages to anyone, anywhere. Keep your conversations going no matter where you are.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
MiVoice Business - MiVoice Business is a business communication platform that delivers voice, messaging, mobility, presence, conferencing, collaboration and applications.
LightShot - The fastest way to take a customizable screenshot.
Screenleap - Screenleap is a web app that lets users share their device's screen over the Internet. These screens can be a desktop computer monitor or a smartphone screen or anything else that can load a web browser. Read more about Screenleap.