Among the 8,500 extensions that are listed in the Joomla Extensions Directory, here are a selection of 6 favorite ones. This is only my opinion, so do not hesitate to discover and to test the various other extensions that are listed in the JED.
K2
K2 provides an out-of-the box integrated solution featuring rich content forms for items (think of Joomla! articles with additional fields for article images, videos, image galleries and attachments), nested-level categories, tags, comments, a system to extend the item base form with additional fields (similar to CCK for those acquainted with Drupal), a powerful plugin API to extend item, category and user forms, ACL, frontend editing, sub-templates & a lot more!
sh404SEF
We created sh404SEF® for Joomla with SEO in mind. sh404sef helps you improve your search engine rankings and get more traffic to your website. Satisfy many of the Google recommendations for search engine optimization with just a few clicks.
JSitemap
JSitemap is the official community choice Joomla! sitemap generator extension and offer an innovative and revolutionary way to manage all types of sitemap contents without need of additional plugins! Up to 400% more site visibility!
Advanced Module Manager
AcyMailing is a reliable Newsletter and email marketing extension for Joomla. AcyMailing enables you to efficiently manage an unlimited number of subscribers, organize them into mailing lists, send personalized newsletters (Hi {subtag:name}...)
JCE Editor
An award-winning, configurable WYSIWYG editor for Joomla! based on Moxiecode's TinyMCE.Includes advanced Image/Media, File and Link handling, plugin support, and an Administration interface for editor configuration.
Responsive Scroll Triggered Box
Did you know over 70% of visitors who abandon your website will never return? With Responsive Scroll Triggered Box you can turn those visitors into subscribers & customers.This Joomla Extension will boost your conversion rates and help you convert visitor into subscribers & customers. Popup any existing module, Display a responsive email subscription form or just write your own custom html!
I hope you found my article useful. Also you may interested in How to get more subscribers with Mailchimp and Joomla!
