Net::Curl provides a Perl interface to libcurl. It was created with object-oriented implementations in mind.
rsscache allows you to aggregate and cache feeds (including RSS) into an SQL database and generate new feeds from them using search queries, categories, etc. A simple XSL example to turn the cache output into a new Web site is included.
Sky is a wrapper around uploaders such as rsync. It uploads a file to a remote host with a Web service and gives you a URL which allows other people to download it immediately.
A 2D CAD program.
A replacement of GNU Stow written in C++.