The most complete portfolio manager system All you need for a Portfolio here. TZ Portfolio+ is an open source advanced portfolio extension for Joomla!
TLP Portfolio Component & Module is a fully Responsive Joomla 3.x extensions that display your Portfolio work in 3 different layouts.
PixPublish; An editorial calendar for Joomla! PixPublish is a great tool to simplify the managing of content.
DPCalendar: Responsive Joomla Calendar and Event Manager. The DPCalendar is an intuitive Joomla calendar, which promises visitors to your Joomla website a smooth event experience.
JUX Social stream - a joomla social display extension from JoomlaUX team, combines all of your different social network interactions into a single network stream or displays them on a Wall in masonry style.
The SSL Redirect plugin is able to redirect non-secure HTTP-pages to secure HTTPS-pages, and back again.
You can use the plugin to easily embed videos hosted on popular services like YouTube, Metacafe, Vimeo (and many more) inside your Joomla articles (content items).
BreezingForms (free) is the only free joomla forms, state of the art form builder for Joomla!® that combines modern techniques with enterprise features. From great looking simple forms up to complex form applications.