Lightshot
Free
Lightshot is the fastest way to take a customizable screenshot. Simple interface, nothing useless and light weight.
Gyazo
Freemium
Gyazo is an open source screenshot program for Windows, Mac OS X and Linux.
Awesome Screenshot
Freemium
Awesome Screenshot is the highest-rated screen capture & image annotation tool on Chrome with over 2 million users.
Grabilla
Free Personal
Grabilla is a software that takes a screenshot of the user's computer screen and uploads it to the Web, FTP, computer or copy to clipboard.
Compare Skitch with alternatives
Compare Awesome Screenshot and Skitch and decide which is most suitable for you.