- Agilis Systems
- Appistry Inc
- Attachmate WRQ
- Bangert Computer Systems
- BEA Systems Inc
- Bemas Software Inc
- Bentley Systems Inc
- Cincom Systems Inc
- Compuware Corp
- Digital Consulting & Software
- Engineering Software Research
- File Net
- Foundry Software Development
- HNC Software
- I Levy & Assoc Inc
- Innerlink Systems
- Keystone Computer Solutions
- Keystone Medical Systems
- Mc Gann Software
- Midwest Automated Time Systems
- Novell Inc
- Oracle Corp
- Parametric Technology Corp
- Peregrine Systems Inc
- Pipkins Inc
- Software Plus
- Swiftlink
- Tetra Soft Inc
- VISLLC
