fastcgi-gallery is a Web gallery based on Apache::Gallery, but is hacked for usage with Perl FastCGI scripts. Therefore, this version is about 10x quicker (with cache turned on) than Apache::Gallery. With the best template system (Template-Toolkit) you can customize your gallery as you wish; for example, you can create a multi-language gallery. A database is not used; everything is stored in files. Output and generated thumbnails are cached for speed optimization.
ExifTool is a platform-independent Perl library plus a command line application for reading, writing, and editing meta-information in image, audio, and video files. It supports many different types of metadata including EXIF, GPS, IPTC, XMP, JFIF, GeoTIFF, ICC Profile, Photoshop IRB, FlashPix, AFCP, and ID3, as well as the maker notes of many digital cameras.