BitNami takes the dreary job of compiling or tweaking installs of open source applications and turns it in to a plug-and-play operation. Bitnami Stacks are available for Linux, Windows, and Mac OS X. Bitnami Stacks are self-containted and won’t interfere with any software already installed on your system. “All Bitnami Stacks are free to download and use under the terms of the Apache License 2.0.” Some of the pre-packaged applications include: Wordpress, Subversion, Drupal, RedRoller, moodle, Joomla, and KTDMS. I recently used the KnowledgeTree stack for my corporate document system. There was a slight tweak required for Ubuntu-flavor Linux - but got it running in about 15 minutes.
Jumpbox focuses their pre-packaged server application offerings using virtual machines (i.e. “ready-to-run virtual machines”). The virtual machine choices include VMware, Xen, MS Virtual Server, and more. They have a decent list of growing applications already available. Some include: Joomla, Cacti, Wordpress, Alfresco, Drupal, vTiger CRM, MediaWiki, SugarCRM, Mantis, etc.