ImageJ is a public domain Java image-viewing and -processing program. It runs either as an online applet or as a downloadable application, on any computer with a Java 1.6 or later virtual machine, and can provide image analytics and basic editing functions.

Version 1.50d:

• Added the Selection Rotator tool to the Toolbar's ">>" menu. To move the selection with this tool, hold down the alt or shift key.
• The Edit>Options>Point Tool dialog, in multi-point mode, is now non-modal and has a "Counter" drop down menu. As a shortcut for opening this dialog, double click on the multi-point tool icon.
• A point in a polygon, polyline or point more...

Requirements

• OS X 10.5 or later
• Java 1.6 or later

Related Links

Download ImageJ 1.49 (full version) Plugins for ImageJ are available here