Txt2HTML
From plain text to HTML. [Perl]

Man2html
From UNIX manpage to HTML.

Piper Project
Rich Text Format (RTF) to HTML tool, documentation on web publishing.

Image2HTML
From GIF and JPEG images to HTML tables. Written in Java.

rpm2html
a generator of Web pages for RPM packages

HTML2Ps
From HTML to PostScript. [Multiple platforms, requires Perl]

HTML Generation
Various conversion scripts from the World Wide Web Consortium.

Source to .html Converters
From C, C++, Java, Modula2, Pascal, Perl source code to HTML with syntax highlighting. [Linux]

HTML txt
From HTML to plain text. Written in REstructured eXtended eXecutor (REXX) language. [OS2, other servers]

WebMerge
Generates static HTML pages from any database or spreadsheet, including Microsoft Access, FileMaker Pro, and Excel.

Net.db
Development of HTML projects from SQL databases. Free trial version, support newsgroup, FAQ. [Flash-intensive].

Ps2HTML
PostScript to HTML. Requires PostScript interpreter.

Filtrix
FrameMaker, HTML, Word, Interleaf, WordPerfect and other formats. [Microsoft Windows, UNIX]

Fmtoweb
From FrameMaker to HTML. [Requires Perl]

ExpressoWeb
Generates HTML from database formats. [Microsoft Windows, Visual Basic runtime]

Src2HTML
Generates HTML hierarchy from C source tree.

WebConvert
Word, WordPerfect, AmiPro, ASCII, to HTML. [Microsoft Windows]

ANE Resources
Keypak, tools for information sharing and management via e-mail, in various formats. Available for most major operating systems.

SkiSoft
Web Publisher, from Word, WordPerfect, Frame Maker, Rich Text Format, to HTML. [Microsoft Windows]

HTMLpp
From plain text to HTML. [Perl]

RTF-2-HTML
From Rich Text Format to HTML, an ActiveX COM component. Can be used in ASP pages or within any gui development language like Visual Basic. There is a free trial version with sample projects available for download.

Asp2php
Active Server Pages (VBScript) to PHP: Hypertext Preprocessor. [Unix, Windows, source code]

Hypermail
From UNIX mailbox format to cross-referenced HTML documents. Suitable for maintaining mailing list archives. [Source only]

Edc2HTML
Builds HTML documents from FrameBuilder element catalogs. [Requires Perl]

BibTeX2HTML
Collection of tools, from BibTeX to HTML. [UNIX]

Unroff
From UNIX troff format to HTML. [UNIX]

WPAHTML
From WordPerfect, Microsoft Word to HTML. [Microsoft Windows]

WpaHTML
WordPerfect to HTML. [Microsoft Windows]

AscToHTM
From text to HTML. [Windows, OpenVMS]

T2T
From Comma Separated Values (CSV) to HTML tables. Free download, forum, screenshots. [Microsoft Windows]

Cxx2HTML
Perl script creates HTML class descriptions from C++ headers.

IntraPDF
Convert PDF file to HTML format.

Verity
HTML Export, from large list of formats to HTML. [Most major platforms supported]

HTMLDoc
HTML to PostScript and Portable Document Format (PDF). [Microsoft Windows, Unix, source code]

Logictran
From Rich Text Format to HTML and XML. [FreeBSD, Linux, Macintosh, Microsoft Windows, Solaris]

Lore's Source Converter
From C, C++, Java, Delphi code to HTML. User's manual, screenshots, download as free software. [Microsoft Windows].

MHonArc
Generates HTML archives from various mail formats. [Perl]

Intelligent Converters:Text-to-HTML
Conversion utility to convert ASCII text documents into HTML format.

LaTeX2HTML
From LaTeX documents to HTML. [Multiple platforms, requires Perl]

Yet Another Word Converter - YAWC Pro
A plug-in for Microsoft Word (97, 2000 and XP) that enables Word documents to be converted into HTML or XML.

Click to Convert
Automatically converts many document formats to HTML or PDF. For Windows 9x, NT, 2000 platforms.

RTF to XML Converter
Converts RTF documents to XML ones preserving initial documents' internal structure and appearance.