More info about OpenLaszlo is available here.
Joomla! is a content management system. It can be used to create simple or complex websites. Joomla! can be used to easily manage every aspect of your website, from adding content and images to updating a product catalog or taking online reservations.
More info about Joomla! is available here.
Movable Type is a weblog publishing system. It has a simple to use interface for building blog sites. And, you can also use it to create multiple blogs on one server.
More information about Movable Type is available here.