phpMyAgenda is a complete web application that enable you to manage and publish events (meeting, concert, session, etc). It stores description, dates, urls, places, contacts, and more. It uses templates to make it very easy to customize. The administrative interface is all graphical for intuitive management. Screen shots available on its homepage.
Create Your GetPaid allows you to start your very own GetPaidTo program. Features: GetPaidTo click, sign-up and read e-mail; Advanced lead/sale system; Unlimited referral levels; Object Oriëntated User System; Template based website; DB Backup/Restore/Optimizer; Advanced searchable memberlist; Built-in Update Check system; installation in 3 steps.
Extremely easy to install and use news management system based on PHP with the renowned MySQL database backend. It allows the news to be edited from anywhere. Support for multiple users and multiple user levels. Also includes avatar and comments support. All settings can be changed in the web-accessible control panel.
Editors module allows to set up admin accounts for editors with multiple permission levels and limited administrator rights.
If you have large website with many ads or visitors, you may want to have some people who will manage ads, users, payment transactions, reviews, affiliates and so on separately. Also you may just want to hide certain parts of Admin Area for your editor(s). The supervisor has full control, his account cannot be deleted.