AnetHelpTool 

AnetHelpTool is WYSIWYG HelpFile authoring system for creating Win/HTML/Java Help files, RTF Manuals and Web sites. It provides an easy and pleasant development process, which saves time and increases your help-writing efficiency.
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WinPedit 

WinPedit is the Windows version of the DOS era Pedit program. Once acquainted with a good DOS editor, it will out perform any Windows editor. WinPedit is such a good editor.
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TSE Pro 

TSE Pro v4.4 for Windows. Compact, fully-featured text editor. Undo/Redo; Multiple files/windows; color syntax hiliting; regular expression search/replace; macro programming language; configurable menus/keyboard/commands; column blocks; much more!
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GYZ Tree Document Editor 

GYZ Tree Document Editor is a tree-structured document editor. It saves your time by creating pages associated to tree nodes within a single document, avoiding creating a lot of separated files on the disk. One single data file for a whole "tree".
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TexNotes 

Feature rich text editor, notes organizer and document publisher developed by GemX. A handy tool with all the ease-of-use that busy professionals need and without all the overhead in effort and time that they don't.
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Write Source 

Write and modify your text with a complete suite of applications: EditExt, ExactWord, Word Spring (spell check, Thesaurus & Definitions). Improved Compatibility Mode enhances spell checking Microsoft Word, Internet Explorer, Outlook Express and more.
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