OPC UA VS SPI
As of 30 October 2026, SPI is named by 1,195 companies and OPC UA by 723; OPC UA skews to companies under 200 people (36% vs 52%), SPI to companies over 1,000 (24% vs 40%).
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: OPC UA's script and mail records show on hundreds of thousands of small sites, SPI rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- OPC UA: 2–200 employees
- 36%
- SPI: 2–200 employees
- 52%
- OPC UA: 1,000+ employees
- 40%
- SPI: 1,000+ employees
- 24%
- Postings per company, 90 days
- 2.5 · 3.6
- 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 | OPC UA | share | SPI | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 4 | 1% | 13 | 1% | even |
| 2-10 employees | 55 | 8% | 119 | 10% | SPI |
| 11-50 employees | 92 | 13% | 215 | 18% | SPI |
| 51-200 employees | 114 | 16% | 285 | 24% | SPI |
| 201-500 employees | 92 | 13% | 178 | 15% | SPI |
| 501-1000 employees | 76 | 11% | 93 | 8% | OPC UA |
| 1001-5000 employees | 107 | 15% | 136 | 11% | OPC UA |
| 5001-10000 employees | 51 | 7% | 49 | 4% | OPC UA |
| 10,001+ employees | 132 | 18% | 107 | 9% | OPC UA |
| Segment | OPC UA | share | SPI | share | Leans |
|---|---|---|---|---|---|
| Manufacturing & industry | 327 | 45% | 581 | 49% | SPI |
| Technology & software | 132 | 18% | 262 | 22% | SPI |
| Business & finance services | 72 | 10% | 138 | 12% | even |
| Utilities & infrastructure | 63 | 9% | 34 | 3% | OPC UA |
| Property & construction | 31 | 4% | 22 | 2% | OPC UA |
| Automotive | 26 | 4% | 42 | 4% | even |
| Commerce & trade | 21 | 3% | 32 | 3% | even |
| Public, community & associations | 21 | 3% | 23 | 2% | even |
| Consumer services & leisure | 9 | 1% | 17 | 1% | even |
| Media & content | 9 | 1% | 15 | 1% | even |
| Transport, logistics & rental | 6 | 1% | 13 | 1% | even |
| Agriculture & forestry | 3 | 0% | – | – | outside top 12 |
| Health care | – | – | 9 | 1% | outside top 12 |
| Segment | OPC UA | share | SPI | share | Leans |
|---|---|---|---|---|---|
| United States | 357 | 49% | 722 | 60% | SPI |
| Germany | 112 | 15% | 76 | 6% | OPC UA |
| United Kingdom | 35 | 5% | 64 | 5% | even |
| France | 30 | 4% | 35 | 3% | even |
| Canada | 19 | 3% | 33 | 3% | even |
| Spain | 16 | 2% | 16 | 1% | even |
| Netherlands | 15 | 2% | 18 | 2% | even |
| Switzerland | 13 | 2% | – | – | outside top 12 |
| India | 13 | 2% | 39 | 3% | even |
| Italy | 13 | 2% | 13 | 1% | even |
| Austria | 11 | 2% | – | – | outside top 12 |
| Poland | 11 | 2% | 17 | 1% | even |
| Sweden | – | – | 23 | 2% | outside top 12 |
| Australia | – | – | 10 | 1% | outside top 12 |
| Segment | OPC UA | share | SPI | share | Leans |
|---|---|---|---|---|---|
| Engineering (non-software) | 807 | 37% | 2,446 | 42% | SPI |
| Software engineering | 371 | 17% | 2,623 | 45% | SPI |
| IT operations & business systems | 252 | 11% | 93 | 2% | OPC UA |
| Data & AI | 85 | 4% | 14 | 0% | OPC UA |
| Sales | 59 | 3% | 47 | 1% | even |
| Product, program & project management | 43 | 2% | 14 | 0% | even |
| Skilled trades and field service | 27 | 1% | 18 | 0% | even |
| General management & consulting | 10 | 0% | – | – | outside top 12 |
| Quality, safety & environment | 8 | 0% | 34 | 1% | even |
| Customer service & success | 7 | 0% | 15 | 0% | even |
| Construction and civil | 3 | 0% | – | – | outside top 12 |
| Education & training | 3 | 0% | – | – | outside top 12 |
| Manufacturing and production | – | – | 27 | 0% | outside top 12 |
| Hospitality and food service | – | – | 22 | 0% | outside top 12 |
| Design & UX | – | – | 13 | 0% | outside top 12 |
The companies behind each column
Companies using OPC UA →
Companies using SPI →
iot platforms protocols ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
SPI is named by 1,195 companies in job postings and OPC UA by 723; 0 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/opc-ua-vs-spi-bus)
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.
OPC UA vs SPI: questions
Which is more used, OPC UA or SPI?
By companies naming it in their own job postings, SPI (1,195) over OPC UA (723). By website-and-DNS footprint, SPI (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses OPC UA?
36% of OPC UA companies have 2 to 200 employees, against 52% for SPI. 40% of OPC UA companies have over 1,000 employees, against 24% for SPI.
Do companies run both?
0 companies name both in their postings, usually OPC UA in marketing and SPI 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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