As of 12.01.2015: Version 6.7.4
Notepad++

Menu > Plugins > Plugin Manager#

Note: You may need to set a proxy in the plugin-manager settings!
DefaultName
xConverter
xDSpellCheck
xMIME Tools
xNppExport
xNppFTP
xPlugin Manager
Compare*
Document Monitor
TextFX Characters
Tidy 2
XML Tools

* Note: Comparison does not show changes inside similar lines. You should use WinMerge here.

Syntax highlighting#

Additional Syntax Highlighting

How to install

To install ABAP:
1. Download zip
2. Unzip and create/append data to <InstallFolder>\userDefineLang.xml
3. Restart and choose Menu > Language > Abap