Guile-Present defines a declarative vocabulary for presentations, together with tools to render presentation documents as SVG or PDF. Guile-Present can be used to make presentations programmatically, but also includes a tools to generate PDF presentations out of Org mode and Texinfo documents.
guile-lib, available under Debian/Ubuntu as "guile-library".
The latest release can be found from Guile-Present's release area.
Check out the git repository via
git clone git://gitorious.org/guile-present/guile-present.git. See the Gitorious page for more options.
Guile-Present is self-documented, check the reference in HTML format or PDF, online in Guile itself, or use info guile-present once you install the package.
Send me an email at
wingo at pobox.com.