jEdit

jEdit helps developers write code, in an intuitive interface with lots of plugins.

Features:

• Combines the best functionality of Unix, Windows and MacOS text editors.
• Runs on any operating system with a Java 2 version 1.3 or higher virtual machine - this includes MacOS X, OS/2, Unix, VMS and Windows.
• Efficient keyboard shortcuts for everything
• Comprehensive online help
• Unlimited undo/redo
• Copy and paste with an unlimited number of clipboards (known as "registers")
• Register contents are saved across editing sessions (4.2)
• "Kill ring" automatically remembers previously deleted text (4.2)
• Rich set of keyboard commands for manipulating entire words, lines and paragraphs at a time
• "Markers" for remembering positions in files to return to later
• Marker locations are saved across editing sessions
• Any number of editor windows may be open, each window may be split into several areas, each area can view a different file. Alternatively, different locations in one file can be viewed in more than one area
• Multiple open windows and split windows are remembered between editing sessions (4.2)
• Rectangular selection
• Multiple selection (sometimes known as "discontinuous" or "additive" selection) for manipulating several chunks of text at once
• Word wrap

Requirements:

• JDK 1.5 and later