Hyperz is a new and public photometric redshift code.

See the Introduction page to have a brief introduction to photometric redshifts. 
The User's Manual  page contains a full description of the code (html and postscript version). 
The sources of the code can be retrieved from the Download page; check it to see the last version of the code.
You can find other  stuff about photometric redshifts and related subjects in the Links page. 
For any problem, comment, congratulations, Contact us.
You can find a detailed description of Hyperz performances in the paper:
"Photometric Redshifts based on standard SED fitting procedures" 
M. Bolzonella, J.-M. Miralles, R. Pelló, 2000, A&A 363, 476-492