A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
The Nooku Framework (codename 'Koowa') can be installed in Joomla as a plugin. It allows developers to build more powerful extensions, or even to develop standalone web applications.
An acronym for Content Delivery Network -- to be used when a question is related to a system of distributed servers (network) that deliver pages and other Web content to a user.
an extension to manage multilingual content. It allows you to manage all your content translations (components/modules) of a Joomla! web site.
for questions related to design patterns in software development. Structural, behavioral and creational are the types of design patterns.
For questions regarding version 1.7 of the Joomla Content Management System. Please note that Joomla 1.7 is no longer officially supported, and that a one-click upgrade to Joomla 2.5 is available.