"We aren’t just building amazing software, we are revolutionizing team communication. Collaborate with coworkers using screen recordings, GIFs, high-def videos, and annotated screenshots, all with one nifty link copied straight to your clipboard. Customize every piece of work with your own branding. Last but not least, privately secure your content like a mob boss."
Dropbox - Online Sync and File Sharing
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
Snagit - Screen Capture Software for Windows and Mac
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.