Loom - Loom is a screen recording extension for Chrome that gives people the ability to create and share media. Create your own videos using your camera, screen view, and audio. Read more about Loom.

SwitchResX - SwitchResX is a tool designed to manage resolutions of all your monitors and HDTVs.

RecordScreen.io - Record screen right from browser. No installation required.

EasyRes - EasyRes is a fast screen resolution switcher for Mac OS X with live animated previews.

Kap - Kap is an open-source screen recorder built with web technology.

Resolutionator - Resolutionator makes it simple to use any of your display's available resolutions.