AptEdit

AptEdit is a 32-bit, full-featured text, hexadecimal, drive, and html editor. It offers many powerful features to view and edit just about any text or binary file, and it's an excellent source editor for Web page authors, developers, and programmers.

Key features include Spell Checker, Auto-Completion, visual files comparison, terminal edit, binary edit, full Unicode support, HEX template, edit drives, seamless Web browser, and so on.
AptEdit Pro can be installed on FLASH or other portable drives. All user configurations are saved in the movable drive. You can carry AptEdit Pro with you wherever your travels or business take you and run it on almost any computer.