EmEditor Professional

EmEditor Professional, a lightweight text editor for Windows, supports Unicode and can handle large files (even larger than 248GB) with speed and ease. The text editor features JavaScript or VBScript macros, plug-ins, syntax highlighting, spell checking, document comparison, drag-and-drop, menu and keyboard customizations, and much more. EmEditor also supports PerlScript, PHPScript, Python, Ruby, and other languages. Compatible with Windows 8.