DzSoft WebPad 

DzSoft WebPad is an extensible HTML editor with PHP and ASP syntax highlighting. Features one-click preview in built-in browser, HTML Tidy tool from the World Wide Web Consortium to format and cleanup your HTML code and much more.
html editor notepad webpad dzsoft preview highlighting component palette html tidy w3c php

Visual Comparer 

Visual Comparer it is file compare and merge utility for text files with support strict lexical and syntax highlight of constructions in various programming languages.
file compare merge utility synchronize comparison visual comparer diff difference highlight

STFWebPen 

STFWebPen is easy-to-use but robust HTML and script editor with:: FTP Client, CSS and DHTML Menu Wizards, Spelling checker, Image Mapper, strong tag support, preview in multiple browsers, syntax highlighting, MSWord docs import and more.
editor script html rtf doc text word macro images ftp horspot style css php

Databrid 

Databrid is a browsing, retrieval and manipulation tool for Oracle Databases. Functionality includes syntax highlighting, automatic case adjustment, viewing table data in tables, schema browsing, save data to CSV, update csv with data.
database tool oracle browser schema editor csv table view package highlighting case adjustment

GWD Text Editor 

GWD Text Editor is a powerful shareware text for Windows. Features include configurable syntax highlighting, ANSI C compatible macro language, projects (IDE for Borland C++ and Java), plug-ins, FTP client, keystroke macros...
gwd text editor programmers windows c java projects highlighting cobol javascript macro macros

EControl Syntax Editor SDK 

Powerful text editor control with syntax highlighting, text folding, text structure tree view... The unique and more important feature is 100% customizable lexer, so you can adjust it for any type of text file. Library contains 19 components.
editor edit control folding text format html xml keymapping lexer analysis highlighting php