"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."
Dropzone - If you want your file uploads to work even without JavaScript, you can include an element with the class fallback that dropzone will remove if the browser is supported.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Dropover - Mac app for easier drag & drop
Snagit - Screen Capture Software for Windows and Mac
Unclutter - Unclutter is an app that is designed to help Mac users bring order to their desktop. Among other features, this powerful piece of software provides quick access to a user's notepad and clipboard.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.