Highlight is a universal converter from source code to HTML, XHTML, RTF, TeX, LaTeX, SVG, BBCode, and terminal escape sequences. (X)HTML and SVG output are formatted by Cascading Style Sheets. It supports more than 170 programming languages, and includes 80 highlighting color themes. The configuration files are Lua scripts with plug-in support. The converter includes some features to provide a consistent layout of the output code.
Bluefish is a programmer's Web development editor written using GTK, designed to save the experienced webmaster some keystrokes. It features a multiple file editor, multiple toolbars, custom menus, image and thumbnail dialogs, open from the Web, CSS dialogs, PHP, HTML, Java, C, and XML support, external program integration (tidy, weblint, make, javac), and lots of wizards.
Oxygen XML Developer is an Oxygen distribution specially tuned for XML development, providing XML editing, XML conversion, XML Schema development, XSLT/ XQuery/ XPath execution and debugging, SOAP and WSDL testing, Native XML and relational database support, and XML instance generation.
Pinot is a D-Bus service that crawls, indexes your documents, and monitors them for changes. It is also a GTK-based user interface that enables you to query the index built by the service or your favorite Web engine, and display and analyze the results. It makes full use of advanced indexing and search facilities offered by Xapian, features language detection, dynamic document summaries, easy labelling of documents, and internal support for common file types. The D-Bus interface allows easy integration with other applications.