These tools help you to edit your code with multiple document windows, syntax highlighting and auto complete.

ActiveX Code Editors by Heaventools Software

Flex Hex 2.5

Use Flex Hex for inspecting binary output, editing the raw data contents of a file, examining the structure of proprietary closed-format data files or old data in unknown formats, quick fixing executable or data files, creating binary files for test runs, copying and pasting a gigabyte large chunk of data, and more. These, and hundreds of similar tasks such as low-level disk imaging and cloning, will make this hex editor/viewer an invaluable tool in your toolbox.

ActiveX Code Editors by SlickEdit Inc.

SlickEdit Tools V1.1 -  SlickEdit® Tools v1.0 for Microsoft® Visual Studio® 2005 leverages years of editing experience and expertise to deliver indispensable development capabilities that integrate into Microsoft's latest development environment. Power programmers want tools that will speed up the development cycle. The Code Navigation commands available in SlickEdit Tools help you move quickly among different elements within the source code, when editing a source file.

ActiveX Code Editors by IDM Computer Solutions, Inc.

UltraEdit 12.20 -  UltraEdit is a disk based editor with a 16-Bit version for Windows 3.x and a 32-Bit version for Windows 95/98/Me/NT/2000 and XP (not Win32s). Key Features - UNICODE support, Disk based text editing - supports files in excess of 4GB, minimum RAM used even for multi-megabyte files, 100,000 word spell checker, with foreign languages support (American English, British English, Dutch, Finnish, French, German, Hungarian, Italian, Spanish and Swedish) and more.