Program/module name Debian package Usage Starlet starlet PSGI web server HTTP::Parser::XS libhttp-parser-xs-perl Faster Starlet IO::File::WithPath libio-file-withpath-perl Sending files PerlMagick perlmagick Scaling etc. MIME::Types libmime-types-perl Sending the right MIME types DBD::Pg libdbd-pg-perl PostgreSQL connection Image::ExifTool libimage-exiftool-perl Parsing EXIF data Crypt::Eksblowfish::Bcrypt libcrypt-eksblowfish-perl Verifying passwords HTML::TagCloud libhtml-tagcloud-perl Tag cloud on /+tags/ jpegtran libjpeg-progs Lossless JPEG rotation dcraw dcraw NEF support Qscale N/A Faster image scaling support