eCommerce

• osCommerce Open Source Online Shop
• Openads adserver software

Content Management

• Site@School - General - Site@School
• phpWebSite Content Management System
• drupal.org - Community plumbing
• SnippetMaster php wysiwyg html content editor

Blog CMS

• WordPress Blog Tool and Weblog Platform
• b2evolution blog tool weblog software multiblog

Image Galleries

• 4images Image Gallery Management
• Coppermine Photo Gallery
  
• Gallery - your photos on your website

Admin

• xampp- install lamp in windows linux
• phpMyAdmin - Manage MySQL Database.

Forum Apps

• phpBB 3 Olympus Open Source forum solution
• vBulletin - Information and Discussion Hub
• Simple Machines Forum - SMF
• Invision Power Board