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Tools · mainframe midrange · Alternatives

z/OS alternatives

As of 4 November 2026, 31 mainframe midrange are named by companies instead of z/OS: IBM i by 1,000 companies, IBM IMS by 403, JCL by 350.

As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.

z/OS, companies in postings
257
Most used alternative
IBM i · 1,000
Fastest hiring, 90 days
IBM i
Alternatives ranked
31
Catalogue
T-1.0.1-prov
01Ranked by evidence

mainframe midrange companies choose instead of z/OS

Companies naming each tool in their own postings, and postings in the last 90 days. Bars are relative to the category leader.

#AlternativeCompaniescompaniesvs z/OSpostings, 90 dCompare
1
IBM iIBM
1,000389%3,733z/OS vs IBM i →
2
IBM IMSIBM
403157%1,325z/OS vs IBM IMS →
3
JCLIBM
350136%1,312z/OS vs JCL →
4
CICSIBM
309120%1,097z/OS vs CICS →
5
VSAMIBM
12649%652z/OS vs VSAM →
6
IBM ZIBM
10742%376soon
7
IBM TSOIBM
10541%209soon
8
IBM MVSIBM
9236%217soon
9
RACFIBM
7529%231soon
10
ISPFIBM
6525%120soon
11
EndevorBroadcom
5321%138soon
12
TSO/ISPFIBM
5321%183soon
13
SMP/EIBM
4317%189soon
14
IBM Hardware Management ConsoleIBM
4016%90soon
15
TurnoverSoftlanding
4016%54soon
16
SDSFIBM
3614%100soon
17
AdabasSoftware AG
3514%144soon
18
ChangeManOpenText
3514%115soon
19
IDMSBroadcom
3313%55soon
20
IBM JES2IBM
2911%88soon
21
IBM SMFIBM
2811%120soon
22
CA 7Broadcom
2711%73soon
23
File-AIDBMC
2711%75soon
24
ACF2Broadcom
229%88soon
25
CLISTIBM
229%60soon
26
IDCAMSIBM
197%71soon
27
BMC MainViewBMC
166%43soon
28
EasytrieveBroadcom
166%43soon
29
IBM 3270IBM
166%40soon
30
z/VMIBM
156%37soon
31
Stratus VOSStratus
114%35soon
3,505 companies name a mainframe midrange in their postings.

Filter on any of them, or on z/OS users who also name an alternative, and open the person who owns the stack.

Get the full list Watch this category

Start free, no card. The first 20 are above; e-mails are verified at the mail server when you open them.

Cite this

Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.

31 mainframe midrange are named by companies instead of z/OS: IBM i by 1,000 companies, IBM IMS by 403, JCL by 350, measured from their own job postings. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/z-os/alternatives)
How we know

Read from the source, not self-reported

Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →

  • RankingCompanies whose own postings name the tool as the team's system, from the Breaknorm technology catalogue T-1.0.1-prov. Editions are folded into their parent product.
  • 90-day postingsOpen postings first seen or posted in the last 90 days that name the tool.
  • Not includedRatings, prices, feature claims, sponsored positions.
FAQ

z/OS alternatives: questions

What is the most used alternative to z/OS?

IBM i: 1,000 companies name it in their own job postings, against 257 for z/OS.

How is this list ranked?

By the number of companies whose own postings name the tool as the team's system (Breaknorm technology catalogue T-1.0.1-prov), then by postings in the last 90 days. No ratings, no vendor input, no sponsored positions.

Does this say which is better?

No. It says who uses what, by company size, industry and country, so you can see which tools companies like yours choose. For features and prices, read the vendors.

Can I get the companies on any of these?

Yes: click the tool, see the first 20 companies, and sign up for the full list with verified e-mails. Counting is free.

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