I have been following Phoca Gallery since its earliest release and I can safely say that it is THE BEST gallery to use with Joomla! CMS! Easy install, easy configuration and overall front end best functionality and usability.
If you want a gallery for your Joomla! install, look no further, just type phoca in Joomla extension search bar and download your copy if this great gallery. Finally, and best of all, the gallery developer is very helpful.