Free Joomla extensions
Joomla is one of the most popular content management systems on the market today. Its popularity is also due to enormous number of templates, software and addons available for this CMS: There is virtually no web page functionality that couldn't be implemented with one of Joomla extension. Free Joomla addons come in form of components, modules and plugins. Below is a list of 10 extensions I install by default with every Joomla installation.
JCE Editor
As writing articles is the main task once Joomla is installed, a good and user friendly editor is a first component I recommend to install. JCE joomla editor is a superset of default TinyMCE editor that is integrated in Joomla. JCE offers some functionality (like browsing and downloading of pictures to server) that will ease significantly your article writing.
Akeeba Backup
One of the most important things with every website is security. For this reason an Akeeba Backup component is a must install. It is very easy to reinstall ore move a whole site with this extension. There is a desktop utility named Native tool that facilitates a backup of various sites on schedule basis. It is possible to do backups also manually and for a various sites in the same time.
JUpdateMan
There are new versions of Joomla every while. This addon makes a Joomla upgrade three clicks straight forward process. Huge time saver over time consuming manual upgrade.
Xmap
For better indexing and general search engine optimization, it is wise idea to generate XML sitemaps of your web site. Xmap is a handy extension that serves to these purposes. Once installed and configured it creates a link to xml sitemap. You will have to enter this link to Google webmaster tools manually. Since than, component will automatically update it, whenever you change the content of the site.
Joom!Fish
When it comes to a multilingual site this is the best Joomla addon available. It facilitates and controls a translation of menus, articles, modules and other components.
GoogleMaps plugin
The most versatile Google maps plugin for Joomla. Reumer Tech Google maps plugin supports multi domain Google API key, KML files, Multi locations, placing plugin in articles, modules and components add many more.
PHP module
PHP module from Fiji Web Design, embeds PHP and Java script code in module position. Useful for adding widgets, custom written php scripts and also AdSense code to your webpage.
Mavik Thumbnails
icture lightbox and photo thumbnail in one plugin. Upload pictures in original size, enable Mavik plugin and change their size (width or height dimension) in pictures property tab of article editor. Plugin will create a thumbnail with lightbox resize on mouse hover.
YouTube video
Simple plugin that shows YouTube videos on the web page. It is possible to define basic look and feel properties of video window like dimensions and border colors.
Joomla extensions directory
Official Joomla Extension site, where majority of commercial and free Joomla addons can be found.