JA Simpli has been developed with the Joomla default templates in mind. We have tried to add the features that are missing from the default Joomla templates.
An open source advanced portfolio extension for Joomla! TZ Portfolio+ is a really good portfolio developing extensions for Joomla that allows users to display, style and manage their portfolio easily.
ZOO, a flexible and powerful content application builder to manage your content. ZOO provides a much improved Joomla experience.
Lightweight and completely free Portfolio template for Joomla 3.
ZT Portfolio is a Joomla! portfolio component designed to enable you to arrange your projects and present your works for the visitors of your site beautifully. This awesome module is responsive and SEO optimize, easy to use and totally compatible with 3.x.
Mb2 Portfolio is a simple, responsive and free Joomla component which allow You to easily create awesome portfolio on Your website.
OT Corporate Tree is clean, highly versatile and well structured Free Joomla! Template suitable for a wide range of business, community, portfolio, photography, personal sites, support sites, etc.
Advanced Portfolio is an extension for Joomla 3 developed by ExtStore Team. With clean theme, responsive design, it is a complete solution for anyone who wants to build portfolio pages on Joomla website.
NT Ixion is a nice solution to be used for portfolio websites or small businesses since it's easy to output product images with effects or create a catalogue or do whatever else.