Jana 2000 is available in the branch test of the repo.
Here is some information until I write a static page about it:
Jana2000 is a crystallographic program focused to solution, refinement and interpretation of difficult, especially modulated structures. It calculates structures having up to three modulation vectors from powder as well as single crystal data measured with X-ray or neutron diffraction. The input diffraction data can be unlimitedly combined, the combination of powder neutron data with single crystal X-ray data being a typical example.
http://www-xray.fzu.cz/jana/jana.html
For those who don’t want to set up the repo. Which is not working for Fedora 9 anyway