NetDirectoryHelp.com

WebSite CEO
Integrated suite for search engine marketing, site maintenance and traffic analysis.
www.websiteceo.com/

Website Management Tools
Provides Ranking-Manager and Robots-Manager, for promotion and spider management.
www.websitemanagementtools.com/

WebSite ProSpider
Submission software, doorway generator, metatag generator and reporting.
webprospider.com/

MkGallery
Generates an image gallery with thumbnails for the Internet. All pages are HTML 4.0 and CSS compatible. (Shell script) [GNU/Linux]
mkgallery.sourceforge.net/

Typo3
A system designed to manage form and content of websites. (JavaScript, PHP, Perl)
sourceforge.net/

Bluefish
A programmer's HTML editor written using GTK, designed to save the experienced webmaster some keystrokes. (C) [GNU/Linux, Unix]
bluefish.openoffice.nl/

BlibbleBlobble
Open source programs to create indexes, photo albums, links directories and search engines for the web. (VB) [Windows]
www.blibbleblobble.co.uk/

BSCW
(Basic Support for Cooperative Work) is a web based collaboration / groupware environment. It is a shared workspace system and supports document upload, event notification, and group management.
bscw.gmd.de/

bkmrkconv
Converts Netscape's bookmarks.html file into a series of interconnected HTML pages which can be put online. (Perl)
www.bleb.org/

FormHandler
Flexible, modular PHP mailscript.
freshmeat.net/