Arista VS Junos OS
As of 30 October 2026, Junos OS is named by 109 companies and Arista by 309; Arista skews to companies under 200 people (30% vs 44%), Junos OS to companies over 1,000 (31% vs 44%).
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: Arista's script and mail records show on hundreds of thousands of small sites, Junos OS rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Arista: 2–200 employees
- 30%
- Junos OS: 2–200 employees
- 44%
- Arista: 1,000+ employees
- 44%
- Junos OS: 1,000+ employees
- 31%
- Postings per company, 90 days
- 3.5 · 3.9
- 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 | Arista | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 2 | 1% | 1 | 1% | even |
| 2-10 employees | 20 | 6% | 8 | 7% | even |
| 11-50 employees | 27 | 9% | 14 | 13% | Junos OS |
| 51-200 employees | 47 | 15% | 26 | 24% | Junos OS |
| 201-500 employees | 44 | 14% | 20 | 18% | Junos OS |
| 501-1000 employees | 34 | 11% | 6 | 6% | Arista |
| 1001-5000 employees | 61 | 20% | 17 | 16% | Arista |
| 5001-10000 employees | 21 | 7% | 6 | 6% | even |
| 10,001+ employees | 53 | 17% | 11 | 10% | Arista |
| Segment | Arista | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 134 | 43% | 64 | 59% | Junos OS |
| Business & finance services | 68 | 22% | 7 | 6% | Arista |
| Manufacturing & industry | 44 | 14% | 12 | 11% | Arista |
| Utilities & infrastructure | 17 | 6% | 15 | 14% | Junos OS |
| Media & content | 12 | 4% | 2 | 2% | Arista |
| Public, community & associations | 8 | 3% | 3 | 3% | even |
| Commerce & trade | 7 | 2% | 1 | 1% | even |
| Property & construction | 6 | 2% | – | – | outside top 12 |
| Consumer services & leisure | 5 | 2% | 3 | 3% | even |
| Health care | 4 | 1% | 2 | 2% | even |
| Automotive | 3 | 1% | – | – | outside top 12 |
| Transport, logistics & rental | 1 | 0% | – | – | outside top 12 |
| Segment | Arista | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| United States | 222 | 72% | 83 | 76% | Junos OS |
| United Kingdom | 20 | 6% | 7 | 6% | even |
| Canada | 7 | 2% | – | – | outside top 12 |
| Germany | 7 | 2% | 4 | 4% | even |
| France | 7 | 2% | 1 | 1% | even |
| India | 7 | 2% | 1 | 1% | even |
| Poland | 6 | 2% | 2 | 2% | even |
| Netherlands | 5 | 2% | 1 | 1% | even |
| Singapore | 5 | 2% | 1 | 1% | even |
| Australia | 4 | 1% | 4 | 4% | Junos OS |
| Czechia | 2 | 1% | 1 | 1% | even |
| Italy | 2 | 1% | – | – | outside top 12 |
| Switzerland | – | – | 1 | 1% | outside top 12 |
| Mexico | – | – | 1 | 1% | outside top 12 |
| Segment | Arista | share | Junos OS | share | Leans |
|---|---|---|---|---|---|
| IT operations & business systems | 955 | 67% | 359 | 62% | Arista |
| Software engineering | 107 | 7% | 56 | 10% | Junos OS |
| Sales | 106 | 7% | 29 | 5% | Arista |
| Engineering (non-software) | 49 | 3% | 20 | 3% | even |
| Product, program & project management | 27 | 2% | 2 | 0% | even |
| Customer service & success | 16 | 1% | 15 | 3% | even |
| Skilled trades and field service | 16 | 1% | 4 | 1% | even |
| Marketing & communications | 7 | 0% | – | – | outside top 12 |
| General management & consulting | 6 | 0% | 2 | 0% | even |
| Arts media and entertainment | 4 | 0% | – | – | outside top 12 |
| Business development & strategy | 4 | 0% | – | – | outside top 12 |
| Data & AI | 4 | 0% | – | – | outside top 12 |
| Quality, safety & environment | – | – | 2 | 0% | outside top 12 |
| Administration & office | – | – | 1 | 0% | outside top 12 |
| Agriculture and environment | – | – | 1 | 0% | outside top 12 |
| Education & training | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Arista →
Companies using Junos OS →
routing switching wireless ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Junos OS is named by 109 companies in job postings and Arista by 309; 30 name both. (Breaknorm, 30 October 2026, https://breaknorm.co/compare/arista-vs-juniper-junos)
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.
Arista vs Junos OS: questions
Which is more used, Arista or Junos OS?
By companies naming it in their own job postings, Arista (309) over Junos OS (109). By website-and-DNS footprint, Junos OS (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Arista?
30% of Arista companies have 2 to 200 employees, against 44% for Junos OS. 44% of Arista companies have over 1,000 employees, against 31% for Junos OS.
Do companies run both?
30 companies name both in their postings, usually Arista in marketing and Junos OS 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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