IBM AIX VS Unix
As of 30 October 2026, Unix is named by 1,926 companies and IBM AIX by 242; IBM AIX skews to companies under 200 people (36% vs 43%), Unix to companies over 1,000 (33% vs 41%).
As of 30 October 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: IBM AIX's script and mail records show on hundreds of thousands of small sites, Unix rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- IBM AIX: 2–200 employees
- 36%
- Unix: 2–200 employees
- 43%
- IBM AIX: 1,000+ employees
- 41%
- Unix: 1,000+ employees
- 33%
- Postings per company, 90 days
- 2.9 · 4.0
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | IBM AIX | share | Unix | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 3 | 1% | 17 | 1% | even |
| 2-10 employees | 8 | 3% | 112 | 6% | Unix |
| 11-50 employees | 34 | 14% | 357 | 19% | Unix |
| 51-200 employees | 44 | 18% | 368 | 19% | even |
| 201-500 employees | 35 | 14% | 248 | 13% | even |
| 501-1000 employees | 19 | 8% | 184 | 10% | even |
| 1001-5000 employees | 39 | 16% | 279 | 14% | even |
| 5001-10000 employees | 18 | 7% | 96 | 5% | IBM AIX |
| 10,001+ employees | 42 | 17% | 265 | 14% | IBM AIX |
| Segment | IBM AIX | share | Unix | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 114 | 47% | 997 | 52% | Unix |
| Business & finance services | 60 | 25% | 365 | 19% | IBM AIX |
| Manufacturing & industry | 19 | 8% | 200 | 10% | Unix |
| Health care | 13 | 5% | 43 | 2% | IBM AIX |
| Commerce & trade | 9 | 4% | 27 | 1% | IBM AIX |
| Public, community & associations | 8 | 3% | 67 | 3% | even |
| Consumer services & leisure | 6 | 2% | 39 | 2% | even |
| Utilities & infrastructure | 5 | 2% | 64 | 3% | even |
| Transport, logistics & rental | 3 | 1% | 24 | 1% | even |
| Automotive | 2 | 1% | 13 | 1% | even |
| Media & content | 2 | 1% | 56 | 3% | Unix |
| Property & construction | 1 | 0% | 18 | 1% | even |
| Segment | IBM AIX | share | Unix | share | Leans |
|---|---|---|---|---|---|
| United States | 131 | 54% | 1,161 | 60% | Unix |
| France | 24 | 10% | 100 | 5% | IBM AIX |
| Canada | 15 | 6% | 48 | 2% | IBM AIX |
| Germany | 13 | 5% | 105 | 5% | even |
| United Kingdom | 11 | 5% | 109 | 6% | even |
| Italy | 5 | 2% | 28 | 1% | even |
| Singapore | 5 | 2% | 26 | 1% | even |
| Spain | 3 | 1% | 20 | 1% | even |
| India | 3 | 1% | 64 | 3% | Unix |
| Portugal | 3 | 1% | – | – | outside top 12 |
| United Arab Emirates | 2 | 1% | – | – | outside top 12 |
| Argentina | 2 | 1% | – | – | outside top 12 |
| Australia | – | – | 21 | 1% | outside top 12 |
| Poland | – | – | 20 | 1% | outside top 12 |
| Netherlands | – | – | 19 | 1% | outside top 12 |
| Segment | IBM AIX | share | Unix | share | Leans |
|---|---|---|---|---|---|
| IT operations & business systems | 729 | 50% | 3,604 | 28% | IBM AIX |
| Software engineering | 251 | 17% | 4,205 | 33% | Unix |
| Engineering (non-software) | 47 | 3% | 863 | 7% | Unix |
| Product, program & project management | 29 | 2% | 131 | 1% | even |
| Data & AI | 26 | 2% | 888 | 7% | Unix |
| Sales | 15 | 1% | 115 | 1% | even |
| Skilled trades and field service | 7 | 0% | 51 | 0% | even |
| Administration & office | 6 | 0% | 33 | 0% | even |
| Customer service & success | 6 | 0% | 300 | 2% | even |
| Finance & accounting | 6 | 0% | 104 | 1% | even |
| General management & consulting | 5 | 0% | – | – | outside top 12 |
| Human resources | 4 | 0% | – | – | outside top 12 |
| Research and science | – | – | 165 | 1% | outside top 12 |
| Quality, safety & environment | – | – | 47 | 0% | outside top 12 |
The companies behind each column
Companies using IBM AIX →
Companies using Unix →
linux unix ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Unix is named by 1,926 companies in job postings and IBM AIX by 242; 240 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/ibm-aix-vs-unix)
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 →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
IBM AIX vs Unix: questions
Which is more used, IBM AIX or Unix?
By companies naming it in their own job postings, Unix (1,926) over IBM AIX (242). By website-and-DNS footprint, Unix (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses IBM AIX?
36% of IBM AIX companies have 2 to 200 employees, against 43% for Unix. 41% of IBM AIX companies have over 1,000 employees, against 33% for Unix.
Do companies run both?
240 companies name both in their postings, usually IBM AIX in marketing and Unix in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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