FLEXIcontent is a free alternative to Joomla's article manager with more features. It allows you to manage your whole content, like articles, image galleries or video galleries, with one interface. That makes the handling more flexible. You can also create content types and multi-categories or configure up to 10 components at the same time. The download is free. FLEXIcontent is native to Joomla 2.5. It works also in the earlier version, Joomla 1.5.

B2J Calendar for K2 by the team at Bang2Joom is by far the most powerful K2 calendar module available and quite possibly one of the best Joomla calendar modules overall. It supports Joomla 2.5 and 3.0, is hyper-responsive and extremely customisable. It is one of the best Joomla extensions that the Bang2Joom team is  most proud to have created.  The Basic Settings allow you to set module class suffix, module width, border size for the whole module, date font size and Calendar mode. There are two modes for displaying the calendar - blog style and AJAX style. Blog style calendar mode This...

ZOO is a famous free Joomla content management extension, which makes your website multifunctional to your users. You can build blogs with additional functions, like comments, tags and social buttons, or product cataloges, movie databaases and business categories to manage companies and their employees in easy way. Also download archives can be added to your websites. A fine feature is the included cook book, which is interesting for all, who want to create a cooking website in Joomla. Yootheme build a easy configuration manager for all functions, which can be set directly in Joomla Backend. The download is free. Yootheme provide ZOO for Joomla 2.5 and Joomla 3.0.