Joomla is one of the best open source Content Management System (CMS) built in PHP. It enables you to run blogs, website or even different news site. Joomla is free and it is very easy to install. Joomla is powerful than WordPress but as compare to Drupal, Joomla is not powerful. No coding skills are required for Joomla. For making Website more customizable Joomla extension plays an important role for Joomla Development professionals to add new features to your website. List of Joomla extensions are:
Virtuemart: This is a free Joomla extension. If you want to sell anything and if you want to integrate shopping cart then you need to know about virtuemart. This is an excellent feature for Joomla Development.
JoomlaPack: it is very helpful for complete site backup or for including database.
Place Here: With the help of Place here you can easily place your images, links, text etc into website.
Google Adsense Plugins: this is one of the best plugin. With the help of Google adsense plugins you can add content very easily.
Xmap: As every website needs site map, Xmap is very helpful for HTML and XML sitemap. With the help of sitemap search engine crawler can crawl and index your pages easily.
Image holder: it is one of the best plug-ins which allows you to add alt-text, links etc to the image.
Sh404sef: From SEO point of view this plugins are very helpful for making URL search engine friendly, for managing Meta tags for each page, for adding h1 tags etc.
Frontpage Slidshow: This Joomla extension is helpful if you want to add CSS slideshow plug-in.
Community Builder: This extension is helpful for all type of social networks. This plug-in is build and manages communities. It provides lots of support from other extensions as well also provides control over Joomla users.
Joomla has too many add–ons, component and extensions. According to requirement you can use all of these extensions for building Joomla 1.5 websites.