Data::Session is typically used by a CGI script to preserve state data between runs of the script. This gives the end user the illusion that the script never exits.

Ruby has factory_girl, Python has factory_boy. Now Perl has DBIx::Class::Factory.

PDF::FromHTML transforms HTML into PDF, using an assortment of XML transformations implemented in PDF::FromHTML::Twig.

The Fast Library for Integer Number Theory is a C library which supports polynomial arithmetic over the integers, fast integer arithmetic and factoring (including a highly optimized quadratic sieve).

DtkWidget is Deepin graphical user interface for deepin desktop development.

QGIS is a Geographic Information System (GIS) which manages, analyzes and display databases of geographic information.