Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Workona - A better way to work in the browser.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Session Buddy - Manage Your Browser Sessions
LightShot - The fastest way to take a customizable screenshot.
Toby - Better Than Bookmarks