Mainframe Software Statistics

Largest z/OS Vendors

Top 20 z/OS Vendors (out of a total of 274 active z/OS vendors), ranked by the number of z/OS software products currently marketed

Vendor Active Supported Inactive Total
1IBM18146371598
2Rocket Software1353812185
3Broadcom9210316211
4BMC775162190
5MacKinney Systems481352
6Software AG435250
7UNICOM Systems380341
8GSF Software300030
9Levi, Ray & Shoup202022
10Software Engineering of America200121
11ASPG180018
12SDS170118
13CDB Software160016
14Vanguard152320
1521st Century Software140014
16Tone Software140014
17Macro 4142016
18TPS Systems131014
19Phoenix Software International121114
20DTS Software110011