NOTE: prawn-layout has been merged into the main prawn repository as of 2010.02.25 (http://github.com/sandal/prawn), however the stable branch of prawn-layout 0.8.x is still hosted here.
Ruby
Latest commit bcfac3e Feb 25, 2010

README

prawn-layout has been merged into http://github.com/sandal/prawn as of
2010.02.25.  The stable branch of 0.8.x is still hosted here, but after Prawn
0.9 is released, the issue tracker will be closed and development will cease on
this repository.

If you want to track the bleeding edge, head over to
http://github.com/sandal/prawn