ASP.NET VS FastAPI
As of 4 November 2026, FastAPI is named by 3,305 companies and ASP.NET by 3,338; ASP.NET skews to companies under 200 people (51% vs 54%), FastAPI to companies over 1,000 (22% vs 26%).
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: ASP.NET's script and mail records show on hundreds of thousands of small sites, FastAPI rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- ASP.NET: 2–200 employees
- 51%
- FastAPI: 2–200 employees
- 54%
- ASP.NET: 1,000+ employees
- 26%
- FastAPI: 1,000+ employees
- 22%
- Postings per company, 90 days
- 2.3 · 2.5
- 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 | ASP.NET | share | FastAPI | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 73 | 2% | 201 | 6% | FastAPI |
| 2-10 employees | 280 | 8% | 544 | 16% | FastAPI |
| 11-50 employees | 715 | 21% | 603 | 18% | ASP.NET |
| 51-200 employees | 693 | 21% | 636 | 19% | even |
| 201-500 employees | 428 | 13% | 349 | 11% | ASP.NET |
| 501-1000 employees | 290 | 9% | 230 | 7% | even |
| 1001-5000 employees | 414 | 12% | 329 | 10% | ASP.NET |
| 5001-10000 employees | 135 | 4% | 107 | 3% | even |
| 10,001+ employees | 310 | 9% | 306 | 9% | even |
| Segment | ASP.NET | share | FastAPI | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 1,814 | 54% | 1,890 | 57% | FastAPI |
| Business & finance services | 676 | 20% | 659 | 20% | even |
| Manufacturing & industry | 259 | 8% | 231 | 7% | even |
| Consumer services & leisure | 98 | 3% | 90 | 3% | even |
| Commerce & trade | 75 | 2% | 55 | 2% | even |
| Media & content | 71 | 2% | 94 | 3% | even |
| Utilities & infrastructure | 68 | 2% | 68 | 2% | even |
| Public, community & associations | 65 | 2% | 76 | 2% | even |
| Property & construction | 54 | 2% | 37 | 1% | even |
| Transport, logistics & rental | 49 | 1% | 24 | 1% | even |
| Health care | 47 | 1% | 33 | 1% | even |
| Automotive | 41 | 1% | 28 | 1% | even |
| Segment | ASP.NET | share | FastAPI | share | Leans |
|---|---|---|---|---|---|
| United States | 1,707 | 51% | 1,829 | 55% | FastAPI |
| India | 261 | 8% | 173 | 5% | ASP.NET |
| United Kingdom | 199 | 6% | 235 | 7% | even |
| Germany | 165 | 5% | 179 | 5% | even |
| Canada | 74 | 2% | 67 | 2% | even |
| France | 74 | 2% | 118 | 4% | even |
| Netherlands | 64 | 2% | 38 | 1% | even |
| Australia | 58 | 2% | 38 | 1% | even |
| Italy | 53 | 2% | – | – | outside top 12 |
| Poland | 51 | 2% | 41 | 1% | even |
| Brazil | 36 | 1% | 35 | 1% | even |
| Spain | 32 | 1% | 41 | 1% | even |
| Singapore | – | – | 37 | 1% | outside top 12 |
| Segment | ASP.NET | share | FastAPI | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 9,719 | 79% | 5,700 | 54% | ASP.NET |
| IT operations & business systems | 866 | 7% | 272 | 3% | ASP.NET |
| Data & AI | 335 | 3% | 3,430 | 32% | FastAPI |
| Product, program & project management | 115 | 1% | 58 | 1% | even |
| Engineering (non-software) | 86 | 1% | 93 | 1% | even |
| Unclassified | 46 | 0% | 30 | 0% | even |
| Customer service & success | 45 | 0% | 12 | 0% | even |
| Design & UX | 39 | 0% | 7 | 0% | even |
| Marketing & communications | 35 | 0% | 19 | 0% | even |
| Sales | 28 | 0% | 25 | 0% | even |
| Education & training | 18 | 0% | 8 | 0% | even |
| General management & consulting | 12 | 0% | 23 | 0% | even |
| Logistics warehouse and transport | 8 | 0% | 7 | 0% | even |
| Quality, safety & environment | 7 | 0% | 4 | 0% | even |
| Finance & accounting | 6 | 0% | 13 | 0% | even |
| Legal, compliance & risk | 6 | 0% | 7 | 0% | even |
| Business development & strategy | 5 | 0% | 4 | 0% | even |
| Construction and civil | 5 | 0% | 5 | 0% | even |
| Human resources | 4 | 0% | 1 | 0% | even |
| Procurement and purchasing | 3 | 0% | – | – | outside top 12 |
| Administration & office | 2 | 0% | – | – | outside top 12 |
| Healthcare clinical | 2 | 0% | 2 | 0% | even |
| Skilled trades and field service | 2 | 0% | – | – | outside top 12 |
| Arts media and entertainment | 1 | 0% | 1 | 0% | even |
| Research and science | – | – | 11 | 0% | outside top 12 |
| Facilities cleaning and security | – | – | 1 | 0% | outside top 12 |
| Public safety and protective services | – | – | 1 | 0% | outside top 12 |
| Travel, leisure & events | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using ASP.NET →
Companies using FastAPI →
backend frameworks ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
FastAPI is named by 3,305 companies in job postings and ASP.NET by 3,338; 59 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/asp-dot-net-vs-fastapi)
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.
ASP.NET vs FastAPI: questions
Which is more used, ASP.NET or FastAPI?
By companies naming it in their own job postings, ASP.NET (3,338) over FastAPI (3,305). By website-and-DNS footprint, FastAPI (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses ASP.NET?
51% of ASP.NET companies have 2 to 200 employees, against 54% for FastAPI. 26% of ASP.NET companies have over 1,000 employees, against 22% for FastAPI.
Do companies run both?
59 companies name both in their postings, usually ASP.NET in marketing and FastAPI 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.
Get either list your way
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Every company on either tool,
with the person who owns it
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