Top Alternatives to Skitch

Greenshot is a free open source screenshot utility.

ShareX is an open source program that lets you take screenshots or screencasts of any selected area with a single key, save them in your clipboard, hard disk, etc

Snipping Tool is a screenshot utility included in Windows Vista and later.

FastStone Capture is a powerful, lightweight, yet full-featured screen capture tool and screen video recorder.

PicPick is an all-in-one program, primarily system tray-based, that provides a full-featured screen capture tool, an intuitive image editor, etc

Snagit software gives you the complete tool for screen capture and video recording on Windows and Mac.

CloudApp is the platform for designers, developers, and support teams to quickly capture and share anything—from screenshots and GIFs to video-screen.

Lightshot is the fastest way to take a customizable screenshot. Simple interface, nothing useless and light weight.

Screenshot Captor is a tool for grabbing, manipulating, annotating, and sharing screenshots.

puush is a super-quick way to share screenshots. Quickly capture any portion of your screen, upload any file, and share them with a short URL automatically.

Awesome Screenshot is the highest-rated screen capture & image annotation tool on Chrome with over 2 million users.

Jumpshare is a file sharing service which allows users to upload files from their PC, Mac, and web.

Monosnap is a free screenshot program for Mac OS X and Windows.

Gyazo is an open source screenshot program for Windows, Mac OS X and Linux.

ScreenCloud is a digital signage cloud platform for easily displaying content on a wide range of readily available screens and hardware.

Capto lets you capture and record your screen, edit videos and images at ease to enhance the content, and share with the world.

Jet Screenshot helps you take a screenshot, edit it quickly and share.

FFsplit is a software to capture and record your desktop.

Capto (Voila) is an easy-to-use app that takes capturing, recording, video and image editing to the next level.

Marker is a visual bug reporting tool.

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.

Easy Screen Capture and Annotation is a screenshot tool.

Open Screenshot is a Goole Chrome extension to take screenshots.