popShot is described as 'adds ease of use and more control to your everyday workflow. Stay organized with quick naming and labelling options and set your preferred output directory dynamically. Grab screenshots to URL and share instantly' and is a Screenshot Capture Tool in the Photos & Graphics category. There are more than 25 alternatives to popShot for a variety of platforms, including Windows, Mac, Online / Web-based, Linux and Firefox. The best alternative is ShareX, which is both free and Open Source. Other great apps like popShot are Greenshot (Freemium, Open Source), LightShot (Free), Evernote Web Clipper (Free) and Spectacle (Free, Open Source).
GrabBox is a utility that reacts to the screenshots you take. It automatically copies the screenshots to your Dropbox Public folder, and then copies the URL to the clipboard – ready to share with friends or strangers!
With Screenshot Ultimate you can take a snapshot easily on your Android device (no root required: read the faq how). Take screenshots on your tablet, phone or other Android device without ads! Share, draw, add text to a screenshot or even send/edit multiple screenshots!
Szoter is easy to use, free, online image annotation tool. It makes expressing Your ideas and thoughts easy. It can be used to share Your ideas with friends, highlight important parts of images or even to create readable bug reports.