EmEditor Professional

EmEditor Professional is a lightweight, yet extensible, text editor for Windows, which supports Unicode (allowing for multi-language support). EmEditor allows you to quickly and easily open or edit huge files (up to 248GB or 2.1 billion lines), using a large file controller, and is optimized for speed and reliability. Compatible with Windows 7 and older Windows systems.
The program features JavaScript or VBScript macros, text encoding support (automatic encoding detection, Byte Order Mark support, file reload with a different encoding, detection of encoding errors), plug-ins, syntax highlighting (including embedded scripts in HTML, ASP, and PHP files), drag-and-drop, and menu and keyboard customizations. The text editor supports not only JavaScript and VBScript for the text editing macros, but also PerlScript, PHPScript, Python, Ruby, and many other ActiveScript languages as long as script engines you want to use are installed on your system.
EmEditor Professional can record and play keystrokes and mouse operations against other applications and includes plug-ins such as Projects, Snippets, HTMLBar, FindBar, Outline, and Word Complete. The program also includes portability options (such as USB drive setup) through an Import/Export wizard, as well as virtual space mode, wrap indent, tabbed window design, vertical selection editing (to allow the simultaneous editing of text in multiple lines), binary editing, smooth scroll, a theme feature for color settings, and crash auto-recovery.