Mainframe Software Statistics

Largest z/VSE Vendors

Top 20 z/VSE Vendors (out of a total of 101 active z/VSE vendors), ranked by the number of z/VSE software products currently marketed

Vendor Active Supported Inactive Total
1CA Technologies596570
2Software AG313135
3IBM3092867
4MacKinney Systems280432
5CSI International271028
6GSF Software140014
7TPS Systems110011
8Lattwein110011
9SDS100010
10Rocket Software102214
11UNICOM Systems9009
12Data2192011
13Semantic Designs8008
14Barnard Software7007
15ASG Software Solutions7108
16Software Pursuits6006
17B.O.S. Software Service6006
18XPS Software6006
19Phoenix Software International6118
20Attachmate6017