Open Source Greenshot Alternatives for Mac
There are many alternatives to Greenshot for Mac if you are looking to replace it. The most popular Mac alternative is 
LightShot, which is free. If that doesn't suit you, our users have ranked more than 100 alternatives to Greenshot and loads of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Greenshot are 
Snagit (Paid), 
CloudApp (Freemium), 
Ksnip (Free, Open Source) and 
Skitch (Freemium).
- Ksnip is a Qt based cross-platform screenshot tool that provides many annotation features for your screenshots.
- Free • Open Source
- Mac
- Windows
- Linux
- Qt
Almost all Greenshot features are available. - Capture a screenshot of your current page in entirety and reliably—without requesting any extra permissions!.
- Freemium • Open Source
- Mac
- Windows
- Linux
- Google Chrome
- Screenshots made simple. Capture and download screenshots without leaving Firefox.
- ScreenCloud is an easy to use screenshot sharing application. Take a screenshot using one of the 3 hotkeys or simply click the ScreenCloud tray icon.
- Allows you to take a screenshot of a given browser page, or a specific region of it and save it to a file, clipboard or Picozu Image Editor.
- * Take a screenshot
* Edit it with various tools (like draw with pen, add shapes, select area, cut, copy, paste, add text, etc.Discontinued
Official Google code page seems abandoned. Last update from Oct 12, 2013.
- Free • Open Source
- Mac
- Windows
- Linux
- Small and free screenshot app for Mac that offers custom area and resolution presets, and much more.
Discontinued
The project is no longer updated and the official website is no longer available. Last version, 1.2, released in July 2013, can be still downloaded from GitHub
- Free • Open Source
- Mac
- Easy Screenshot is an easy-to-use screen capturing tool from right-click context menu.
- Easily upload screenshot or files to FTP server and copy its URL address to clipboard.No screenshots yet
- Free • Open Source
- Mac
- Windows
- Linux
- MagicCap is an image/GIF capture suite for Mac and Linux featuring screenshot manipulation options such as blurring.