1.   Unicenter is an open systems equivalent to its current mainframe software for data centre management.

2.   By targeting only the critical date operations, a Waltham, Mass., company enables its customers to save money and quickly repair mainframe software.

3.   By targeting only critical date operations, a Waltham, Mass., company enables its customers to save money and quickly repair mainframe software.

4.   Compuware, based in Farmington Hills, Mich., makes programming tools for debugging, analyzing and managing mainframe software.

5.   Continuum, based in Austin, Texas, specializes in mainframe computer software to help insurers process claims.

6.   He also holds Computer Associates, which writes mainframe software.

7.   IBM dominates the market with its operating systems, mainframe database software and programming language compilers.

8.   It also writes mainframe software.

9.   Since being founded by Wang, it has grown to dominate an obscure but lucrative business of mainframe utility software, the programs that help big computers run smoothly.

10.   Compuware, building a new headquarters in downtown Detroit, has struggled as mainframe software sales have declined.