Linux US Postal Service Gives Stamp of Approval To FOSS

The U.S.

Postal Service (USPS) has switched 1,300 of the servers that manage its package tracking system to a Linux environment. The move has taken the better part of a year since all the original system code was written in Cobol and had to be converted for Linux -- a less expensive option than rewriting it altogether.

Source:
http://ostatic.com/blog/u-s-postal-service-gives-stamp-of-approval-to-foss