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 50 supported destinations you can choose from.
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Pro Free and open source
ShareX is licensed under GPL with source code available on GitHub.
Pro Allows uploading to a vast number of different services
Designed as file uploader in the first place, ShareX supports overhelming amount of services for you to upload your files to and the list is expanding.
Pro Can capture video too
Apart from still images, ShareX allows the user to record unlimited video with all the options available for normal image capture.
Pro Has an editor
It has its own screen editing tool.
You can choose what shortcut key to bind your command to, as well what host it uploads the file to.
Pro Capturing (screen, video, a window, etc.) with annotation + automation
Capturing (screen, video, a window, etc.) with annotation + automation makes for some powerful workflows.
Annotation is key for research on any project size. Capturing screenshots, editing them ("annotating"), converting to a PNG, removing the background to make a transparent version, saving to google drive, creating large+med+sm sizes, uploading thumbnails, is an example of a workflow you could create. The list goes on...
You'll find the same strength & depth in features for image handling also for text, videos, other files by type, and on and on..
Pro It has a dead simple way for creating animated GIFs
It is great for creating software tutorials or highlighting new features in a sales function - nothing beats a well-placed animated GIF in an email.
Pro Freezes screen when you capture
When you enter a capture mode, the screen content is preserved as it was when you started capturing by default. However there is a special "Light" mode where the screen does not freeze.
Con Scrolling window capture doesn't work always as expected
Sometimes might need to use another screen capture software to capture a scrolling page.
Con The editor is rather simplistic
Con Too complicated
This is extremely customizable, but extremely complex! If you want something simple and intuitive out of the box, stay away from ShareX.