Hierarchical
New Hierarchical Menu is a multi-platform compatible asy to configure menu.
Developer: http://website4sale.net/...
License: Freeware
Operating System: Unix/Linux/Windows
Flooble Hierarchical Select Menu is multi-platform compatible.
Developer: http://www.flooble.com/s...
License: Freeware
Operating System: All
A mind mapper, and at the same time an easy-to-operate hierarchical editor with strong emphasis on folding.
Developer: freemind
License: GNU General Public License (GPL)
Operating System: OS Independent (Written in an interpreted language)
Zonk.
Developer: Jürgen Gramenz
License: GNU General Public License (GPL)
Operating System: Unix, Linux, Windows, Mac OS, platform-independent
PHP Layers Menu is both Unix and Linux compatible.
Developer: Marco Pratesi
License: Freeware
Operating System: Unix/Linux
Features include: Totally interactive, Completely customizable, One-time and repeating events support, Hierarchical permission scheme, Unlimited number of events per calendar, Create a separate calendar for each user, Powerful 'planner view', four different calendar periods paired with four different calendar types, Extensive search facility, Template based design, Optional historical event database, and more.
Developer: calendar.greathill.com
License: Freeware
Operating System: All
This library consisting of a single php file implements hierarchical datastructures (trees) using the mysql database.
Developer: Rolf Brugger
License: Freeware
Operating System: any
PHP2Go is a development framework designed to help experient developers and begginer programmers to create Web-based Systems.
Developer: Marcos Pont
License: Freeware
Operating System: Platform Independent
TWiki is a flexible, powerful, and simple Web based collaboration platform.
Developer: TWiki
License: GNU General Public License (GPL)
Operating System: OS Independent
The proxy offline browser archives all web pages you have visited online.
Developer: MM3Tools Muenzenberger G...
License: Freeware
Operating System: Linux, Unix, Windows
Softcomplex CMS (SCMS) is the web application designed to simplify the static content management of the websites.
Developer: Softcomplex Inc.
License: Freeware
Operating System: Linux, Unix, Windows
We have recently developed a component framework for PHP 5 named PRADO.
Developer: Charlie Q. Xue
License: Freeware
Operating System: All

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