Also:
http://www.sstglobal.com

Originally:
http://www.sourcecovery.com

• Note: No "re" and no hyphen; www.source-recovery.com is a different company; see SourceRecoveryCompany.

From their web page: Source Recovery develops one-of-a-kind programmer utilities and system management tools that provide mission critical services to companies relying on midrange and mainframe servers. They have decompilers for HP-UX C/C++; IBM AS400 to RPG, COBOL, DDS, CLP; IBM S/36, S38 to RPG, COBOL, DDS, CLP. The decompilers are available for purchase, some are available on an annual lease basis, and the company offers decompilation services, including the use of custom tools.