SANIsoft

Coppermine Picture Gallery

With 3 million + downloads from Sourceforge alone Coppermine Picture Gallery is one of the most popular PHP based open source software in the world.

arrangement of pictures in categories and albums;
picture information stored in database;
users can upload pictures with web interface of ftp (and admin can batch-add to database);
full multimedia support
creation of thumbnails and intermediate size pics;
search feature;
last added;
random picture;
user management (private galleries, groups);
integration of user management with various bbs (like phpBB, YaBB SE, SMF, Invisionboard, vbulletin);
caption, title, description and user defined fields for each picture (searchable);
easy install (installer provided);

the list is almost endless....

Website: http://coppermine-gallery.net/

Dr. Tarique Sani is one of the lead developer of Coppermine and the Coppermine team has 3 more developers who are from SANIsoft.