Mainframe Software Statistics

Largest z/OS Vendors

Top 20 z/OS Vendors (out of a total of 281 active z/OS vendors), ranked by the number of z/OS software products currently marketed

	Vendor	Active	Supported	Inactive	Total
1	IBM	257	92	227	576
2	Broadcom	91	115	2	208
3	Rocket Software	76	10	10	96
4	BMC	65	44	60	169
5	ASG Software Solutions	62	18	3	83
6	MacKinney Systems	48	1	3	52
7	Software AG	43	5	2	50
8	UNICOM Systems	38	0	3	41
9	GSF Software	30	0	0	30
10	Innovation Data Processing	22	1	0	23
11	Levi, Ray & Shoup	20	2	0	22
12	Software Engineering of America	20	0	1	21
13	ASPG	18	0	0	18
14	SDS	17	0	1	18
15	Micro Focus	16	2	5	23
16	CDB Software	16	0	0	16
17	Precisely	15	12	0	27
18	Tone Software	14	0	0	14
19	21st Century Software	14	0	0	14
20	Macro 4	14	2	0	16