Monosnap!

ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to over 80 supported destinations you can choose from.

PicPick is an all-in-one software for software developers, graphic designers and home user.

Skitch is a screenshot editing and sharing utility for Mac and iOS that permits the user to add shapes and text to an image, and then share it online. Images can also be exported to various image formats.

puush is a super-quick way to share screenshots and files. Quickly capture any portion of your screen, upload any file, and share them with a short URL automatically placed in your clipboard. Share them with the world or make them private, for your eyes only.

KShare is a screenshotting utility built using Qt and written in C++. It has many features, including:

FluffyApp is a Windows client for CloudApp. Super simple sharing for files, links, text and screenshots. In one little app.

A freeware application that lets users stream high quality content similar to XSplit Broadcaster and Flash Media Live Encoder. Currently, the application is in early stages of development. This project is actively looking for dedicated testers.

Glui is the simplest way to capture, annotate and share screenshots.

Meaki. Find it. Clip it. Keep it. Share it.

Awesome Screenshot Minus is a less intrusive, open source version of the popular Awesome Screenshot .

Capture screen and edit screenshot with Annotation Pilot. This screen capture software allows you to add text and graphics to your screenshot, save your screenshot as a graphic file or send it by email.