Internet Explorer VS Mozilla Firefox
As of 4 November 2026, Mozilla Firefox is named by 249 companies and Internet Explorer by 578; Internet Explorer skews to companies under 200 people (29% vs 52%), Mozilla Firefox to companies over 1,000 (22% vs 46%).
As of 4 November 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: Internet Explorer's script and mail records show on hundreds of thousands of small sites, Mozilla Firefox rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Internet Explorer: 2–200 employees
- 29%
- Mozilla Firefox: 2–200 employees
- 52%
- Internet Explorer: 1,000+ employees
- 46%
- Mozilla Firefox: 1,000+ employees
- 22%
- Postings per company, 90 days
- 2.2 · 4.4
- 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 | Internet Explorer | share | Mozilla Firefox | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 5 | 1% | 8 | 3% | Mozilla Firefox |
| 2-10 employees | 28 | 5% | 42 | 17% | Mozilla Firefox |
| 11-50 employees | 55 | 10% | 45 | 18% | Mozilla Firefox |
| 51-200 employees | 82 | 14% | 43 | 17% | Mozilla Firefox |
| 201-500 employees | 87 | 15% | 36 | 14% | even |
| 501-1000 employees | 53 | 9% | 19 | 8% | even |
| 1001-5000 employees | 120 | 21% | 24 | 10% | Internet Explorer |
| 5001-10000 employees | 38 | 7% | 10 | 4% | Internet Explorer |
| 10,001+ employees | 110 | 19% | 22 | 9% | Internet Explorer |
| Segment | Internet Explorer | share | Mozilla Firefox | share | Leans |
|---|---|---|---|---|---|
| Business & finance services | 111 | 19% | 45 | 18% | even |
| Manufacturing & industry | 97 | 17% | 20 | 8% | Internet Explorer |
| Technology & software | 82 | 14% | 90 | 36% | Mozilla Firefox |
| Health care | 64 | 11% | 6 | 2% | Internet Explorer |
| Public, community & associations | 63 | 11% | 19 | 8% | Internet Explorer |
| Consumer services & leisure | 31 | 5% | 22 | 9% | Mozilla Firefox |
| Property & construction | 31 | 5% | 15 | 6% | even |
| Utilities & infrastructure | 22 | 4% | 7 | 3% | even |
| Automotive | 20 | 3% | 3 | 1% | Internet Explorer |
| Commerce & trade | 18 | 3% | 5 | 2% | even |
| Hospitality & travel | 18 | 3% | – | – | outside top 12 |
| Transport, logistics & rental | 14 | 2% | 2 | 1% | even |
| Media & content | – | – | 14 | 6% | outside top 12 |
| Segment | Internet Explorer | share | Mozilla Firefox | share | Leans |
|---|---|---|---|---|---|
| United States | 430 | 74% | 143 | 57% | Internet Explorer |
| United Kingdom | 26 | 4% | 11 | 4% | even |
| Canada | 24 | 4% | 7 | 3% | even |
| France | 10 | 2% | 11 | 4% | Mozilla Firefox |
| India | 9 | 2% | 7 | 3% | even |
| Germany | 8 | 1% | 32 | 13% | Mozilla Firefox |
| Spain | 3 | 1% | – | – | outside top 12 |
| MY | 3 | 1% | – | – | outside top 12 |
| Netherlands | 3 | 1% | – | – | outside top 12 |
| United Arab Emirates | 2 | 0% | 2 | 1% | even |
| Austria | 2 | 0% | 2 | 1% | even |
| Australia | 2 | 0% | – | – | outside top 12 |
| Belgium | – | – | 3 | 1% | outside top 12 |
| Poland | – | – | 3 | 1% | outside top 12 |
| Romania | – | – | 3 | 1% | outside top 12 |
| Denmark | – | – | 2 | 1% | outside top 12 |
| Segment | Internet Explorer | share | Mozilla Firefox | share | Leans |
|---|---|---|---|---|---|
| Retail & store operations | 312 | 15% | 3 | 0% | Internet Explorer |
| Skilled trades and field service | 164 | 8% | 24 | 2% | Internet Explorer |
| IT operations & business systems | 141 | 7% | 103 | 8% | even |
| Administration & office | 120 | 6% | 19 | 1% | Internet Explorer |
| Software engineering | 115 | 5% | 414 | 31% | Mozilla Firefox |
| Engineering (non-software) | 100 | 5% | 30 | 2% | Internet Explorer |
| Sales | 97 | 5% | 54 | 4% | even |
| Customer service & success | 94 | 4% | 35 | 3% | even |
| Social care and community | 89 | 4% | 7 | 1% | Internet Explorer |
| Finance & accounting | 75 | 4% | 26 | 2% | even |
| Healthcare clinical | 72 | 3% | 34 | 3% | even |
| Logistics warehouse and transport | 67 | 3% | 14 | 1% | Internet Explorer |
| Construction and civil | 38 | 2% | 2 | 0% | even |
| Legal, compliance & risk | 33 | 2% | 27 | 2% | even |
| Quality, safety & environment | 29 | 1% | 15 | 1% | even |
| Hospitality and food service | 28 | 1% | 1 | 0% | even |
| Product, program & project management | 28 | 1% | 29 | 2% | even |
| Education & training | 24 | 1% | 14 | 1% | even |
| Human resources | 23 | 1% | 11 | 1% | even |
| Facilities cleaning and security | 22 | 1% | 9 | 1% | even |
| General management & consulting | 21 | 1% | 5 | 0% | even |
| Research and science | 20 | 1% | 4 | 0% | even |
| Real estate and property | 15 | 1% | – | – | outside top 12 |
| Manufacturing and production | 13 | 1% | 2 | 0% | even |
| Arts media and entertainment | 11 | 1% | – | – | outside top 12 |
| Procurement and purchasing | 11 | 1% | – | – | outside top 12 |
| Marketing & communications | 10 | 0% | 7 | 1% | even |
| Travel, leisure & events | 10 | 0% | – | – | outside top 12 |
| Unclassified | 10 | 0% | 94 | 7% | Mozilla Firefox |
| Data & AI | 9 | 0% | 20 | 2% | even |
| Design & UX | – | – | 14 | 1% | outside top 12 |
| Business development & strategy | – | – | 12 | 1% | outside top 12 |
| Healthcare support and caregiving | – | – | 12 | 1% | outside top 12 |
| Public safety and protective services | – | – | 3 | 0% | outside top 12 |
The companies behind each column
Companies using Internet Explorer →
Companies using Mozilla Firefox →
web browsers ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Mozilla Firefox is named by 249 companies in job postings and Internet Explorer by 578; 101 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/internet-explorer-vs-mozilla-firefox)
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.
Internet Explorer vs Mozilla Firefox: questions
Which is more used, Internet Explorer or Mozilla Firefox?
By companies naming it in their own job postings, Internet Explorer (578) over Mozilla Firefox (249). By website-and-DNS footprint, Mozilla Firefox (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Internet Explorer?
29% of Internet Explorer companies have 2 to 200 employees, against 52% for Mozilla Firefox. 46% of Internet Explorer companies have over 1,000 employees, against 22% for Mozilla Firefox.
Do companies run both?
101 companies name both in their postings, usually Internet Explorer in marketing and Mozilla Firefox 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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