DDS (Data Distribution Service) VS RS-232
As of 30 October 2026, RS-232 is named by 342 companies and DDS (Data Distribution Service) by 194; DDS (Data Distribution Service) skews to companies under 200 people (46% vs 39%), RS-232 to companies over 1,000 (38% vs 29%).
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: DDS (Data Distribution Service)'s script and mail records show on hundreds of thousands of small sites, RS-232 rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- DDS (Data Distribution Service): 2–200 employees
- 46%
- RS-232: 2–200 employees
- 39%
- DDS (Data Distribution Service): 1,000+ employees
- 29%
- RS-232: 1,000+ employees
- 38%
- Postings per company, 90 days
- 2.8 · 2.6
- 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 | DDS (Data Distribution Service) | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 2 | 1% | 1 | 0% | even |
| 2-10 employees | 26 | 13% | 13 | 4% | DDS (Data Distribution Service) |
| 11-50 employees | 26 | 13% | 49 | 14% | even |
| 51-200 employees | 38 | 20% | 71 | 21% | even |
| 201-500 employees | 23 | 12% | 46 | 13% | even |
| 501-1000 employees | 23 | 12% | 31 | 9% | DDS (Data Distribution Service) |
| 1001-5000 employees | 21 | 11% | 51 | 15% | RS-232 |
| 5001-10000 employees | 5 | 3% | 20 | 6% | RS-232 |
| 10,001+ employees | 30 | 15% | 60 | 18% | RS-232 |
| Segment | DDS (Data Distribution Service) | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| Manufacturing & industry | 74 | 38% | 180 | 53% | RS-232 |
| Technology & software | 41 | 21% | 53 | 15% | DDS (Data Distribution Service) |
| Business & finance services | 19 | 10% | 33 | 10% | even |
| Automotive | 12 | 6% | 16 | 5% | even |
| Property & construction | 11 | 6% | 13 | 4% | even |
| Public, community & associations | 7 | 4% | 7 | 2% | even |
| Transport, logistics & rental | 7 | 4% | 7 | 2% | even |
| Utilities & infrastructure | 7 | 4% | 12 | 4% | even |
| Commerce & trade | 6 | 3% | 7 | 2% | even |
| Media & content | 4 | 2% | 5 | 1% | even |
| Health care | 3 | 2% | 2 | 1% | even |
| Consumer services & leisure | 2 | 1% | 5 | 1% | even |
| Segment | DDS (Data Distribution Service) | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| United States | 129 | 66% | 210 | 61% | DDS (Data Distribution Service) |
| Germany | 23 | 12% | 21 | 6% | DDS (Data Distribution Service) |
| United Kingdom | 8 | 4% | 21 | 6% | RS-232 |
| France | 5 | 3% | 11 | 3% | even |
| Switzerland | 3 | 2% | – | – | outside top 12 |
| India | 3 | 2% | 17 | 5% | RS-232 |
| Canada | 2 | 1% | 11 | 3% | RS-232 |
| Spain | 2 | 1% | 4 | 1% | even |
| Netherlands | 2 | 1% | – | – | outside top 12 |
| Norway | 2 | 1% | – | – | outside top 12 |
| Singapore | 2 | 1% | 6 | 2% | even |
| United Arab Emirates | 1 | 1% | 3 | 1% | even |
| Italy | – | – | 8 | 2% | outside top 12 |
| Poland | – | – | 5 | 1% | outside top 12 |
| Sweden | – | – | 4 | 1% | outside top 12 |
| Segment | DDS (Data Distribution Service) | share | RS-232 | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 317 | 41% | 431 | 36% | DDS (Data Distribution Service) |
| Engineering (non-software) | 170 | 22% | 560 | 47% | RS-232 |
| Marketing & communications | 23 | 3% | – | – | outside top 12 |
| IT operations & business systems | 22 | 3% | 15 | 1% | even |
| Data & AI | 17 | 2% | – | – | outside top 12 |
| Finance & accounting | 14 | 2% | – | – | outside top 12 |
| Quality, safety & environment | 11 | 1% | 5 | 0% | even |
| Sales | 11 | 1% | 4 | 0% | even |
| Product, program & project management | 10 | 1% | 4 | 0% | even |
| Construction and civil | 6 | 1% | 1 | 0% | even |
| Skilled trades and field service | 6 | 1% | 60 | 5% | RS-232 |
| Design & UX | 4 | 1% | – | – | outside top 12 |
| Customer service & success | – | – | 7 | 1% | outside top 12 |
| Arts media and entertainment | – | – | 2 | 0% | outside top 12 |
| Logistics warehouse and transport | – | – | 2 | 0% | outside top 12 |
| Manufacturing and production | – | – | 2 | 0% | outside top 12 |
The companies behind each column
Companies using DDS (Data Distribution Service) →
Companies using RS-232 →
iot platforms protocols ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
RS-232 is named by 342 companies in job postings and DDS (Data Distribution Service) by 194; 0 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/dds-vs-rs-232)
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.
DDS (Data Distribution Service) vs RS-232: questions
Which is more used, DDS (Data Distribution Service) or RS-232?
By companies naming it in their own job postings, RS-232 (342) over DDS (Data Distribution Service) (194). By website-and-DNS footprint, RS-232 (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses DDS (Data Distribution Service)?
46% of DDS (Data Distribution Service) companies have 2 to 200 employees, against 39% for RS-232. 29% of DDS (Data Distribution Service) companies have over 1,000 employees, against 38% for RS-232.
Do companies run both?
0 companies name both in their postings, usually DDS (Data Distribution Service) in marketing and RS-232 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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