Utopia 2.4.4 is included in the main Debian repository (https://packages.debian.org/stable/main/utopia-documents) and Ubuntu Universe repositories (https://launchpad.net/ubuntu/+source/utopia-documents).
The new release of version 3.0 is currently undergoing review, but will appear in the repositories once complete.
To build utopia on other platforms, download the source package and run the included configure script and follow the prompts.
If you wish to package Utopia for another packaging system you might like to look at the debian/rules file in the source archive to see how to configure the build non-interactively. Email firstname.lastname@example.org if you need any assistance.