Joomla contact form builder extension is a complicated tool for making submission forms for your Joomla website. It permits you to specify parameters like colors and fonts. It can use a Google map when given an address or geographical coordinates (longitude and latitude), and the user can drag the marker to the required location.
WordPress FAQ is a cool plugin for creating your FAQ section . It has a lot of parameters to set, and it will allow you set your own theme from scratch. It has a user-friendly front-end and back-end interface, allowing you to set all parameters quickly and easily. FAQs have SEO-friendly URLs.
Symbiose is a WebOS, a Web desktop which is accessible from any Web browser. It works like Linux, using the same filetree, UI management, software update system, and commands (ls, cd, etc.). It offers file management (sending/downloading, basic operations, copy-and-paste, drag-and-drop, etc.), a text editor with syntax highlighting and automatic indentation, a music and video player, a word processor, an archive manager, management of system parameters (such as appearance, users, quotas, interfaces, and software sources), a software center, an updates manager similar to apt-get, FTP server, DropBox, and Google Drive mounting (with integration of these services in Symbiose storage), and more.