Switchy Omega Proxy switcher with autoswitch ability (according to url) https://chrome.google.com/webstore/detail/proxy-switchyomega...

Screencastify Video capture from desktop/tab/webcam https://chrome.google.com/webstore/detail/screencastify-scre...

The Great Suspender Automatically suspends unused tabs to free up system resources https://chrome.google.com/webstore/detail/the-great-suspende...

Open Screenshot Can capture an entire page, even if bigger than screen https://chrome.google.com/webstore/detail/open-screenshot/ak...