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Fleetora · first roles in DEFastAPI VS Spring Framework_
As of 4 November 2026, Spring Framework is named by 3,122 companies and FastAPI by 3,305; FastAPI skews to companies under 200 people (54% vs 51%), Spring Framework to companies over 1,000 (25% vs 22%).
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: FastAPI's script and mail records show on hundreds of thousands of small sites, Spring Framework rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- FastAPI: 2–200 employees
- 54%
- Spring Framework: 2–200 employees
- 51%
- FastAPI: 1,000+ employees
- 22%
- Spring Framework: 1,000+ employees
- 25%
- Postings per company, 90 days
- 2.5 · 3.5
- 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 | FastAPI | share | Spring Framework | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 201 | 6% | 83 | 3% | FastAPI |
| 2-10 employees | 544 | 16% | 234 | 7% | FastAPI |
| 11-50 employees | 603 | 18% | 624 | 20% | even |
| 51-200 employees | 636 | 19% | 721 | 23% | Spring Framework |
| 201-500 employees | 349 | 11% | 423 | 14% | Spring Framework |
| 501-1000 employees | 230 | 7% | 243 | 8% | even |
| 1001-5000 employees | 329 | 10% | 373 | 12% | even |
| 5001-10000 employees | 107 | 3% | 99 | 3% | even |
| 10,001+ employees | 306 | 9% | 322 | 10% | even |
| Segment | FastAPI | share | Spring Framework | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 1,890 | 57% | 1,903 | 61% | Spring Framework |
| Business & finance services | 659 | 20% | 660 | 21% | even |
| Manufacturing & industry | 231 | 7% | 128 | 4% | FastAPI |
| Media & content | 94 | 3% | 90 | 3% | even |
| Consumer services & leisure | 90 | 3% | 77 | 2% | even |
| Public, community & associations | 76 | 2% | 40 | 1% | even |
| Utilities & infrastructure | 68 | 2% | 48 | 2% | even |
| Commerce & trade | 55 | 2% | 53 | 2% | even |
| Property & construction | 37 | 1% | – | – | outside top 12 |
| Health care | 33 | 1% | 26 | 1% | even |
| Automotive | 28 | 1% | 21 | 1% | even |
| Transport, logistics & rental | 24 | 1% | 44 | 1% | even |
| Hospitality & travel | – | – | 18 | 1% | outside top 12 |
| Segment | FastAPI | share | Spring Framework | share | Leans |
|---|---|---|---|---|---|
| United States | 1,829 | 55% | 1,518 | 49% | FastAPI |
| United Kingdom | 235 | 7% | 191 | 6% | even |
| Germany | 179 | 5% | 208 | 7% | even |
| India | 173 | 5% | 156 | 5% | even |
| France | 118 | 4% | 145 | 5% | even |
| Canada | 67 | 2% | 44 | 1% | even |
| Spain | 41 | 1% | 40 | 1% | even |
| Poland | 41 | 1% | 61 | 2% | even |
| Australia | 38 | 1% | – | – | outside top 12 |
| Netherlands | 38 | 1% | 38 | 1% | even |
| Singapore | 37 | 1% | – | – | outside top 12 |
| Brazil | 35 | 1% | 47 | 2% | even |
| Italy | – | – | 77 | 2% | outside top 12 |
| Switzerland | – | – | 51 | 2% | outside top 12 |
| Segment | FastAPI | share | Spring Framework | share | Leans |
|---|---|---|---|---|---|
| Software engineering | 5,700 | 54% | 14,922 | 83% | Spring Framework |
| Data & AI | 3,430 | 32% | 304 | 2% | FastAPI |
| IT operations & business systems | 272 | 3% | 785 | 4% | even |
| Engineering (non-software) | 93 | 1% | 89 | 0% | even |
| Product, program & project management | 58 | 1% | 113 | 1% | even |
| Unclassified | 30 | 0% | 81 | 0% | even |
| Sales | 25 | 0% | 23 | 0% | even |
| General management & consulting | 23 | 0% | 8 | 0% | even |
| Marketing & communications | 19 | 0% | 3 | 0% | even |
| Finance & accounting | 13 | 0% | 9 | 0% | even |
| Customer service & success | 12 | 0% | 29 | 0% | even |
| research and science | 11 | 0% | 2 | 0% | even |
| Education & training | 8 | 0% | 23 | 0% | even |
| Design & UX | 7 | 0% | 8 | 0% | even |
| Legal, compliance & risk | 7 | 0% | 6 | 0% | even |
| logistics warehouse and transport | 7 | 0% | 3 | 0% | even |
| construction and civil | 5 | 0% | 11 | 0% | even |
| Business development & strategy | 4 | 0% | 1 | 0% | even |
| Quality, safety & environment | 4 | 0% | 11 | 0% | even |
| healthcare clinical | 2 | 0% | 2 | 0% | even |
| arts media and entertainment | 1 | 0% | – | – | outside top 12 |
| facilities cleaning and security | 1 | 0% | – | – | outside top 12 |
| Human resources | 1 | 0% | 5 | 0% | even |
| public safety and protective services | 1 | 0% | – | – | outside top 12 |
| Travel, leisure & events | 1 | 0% | – | – | outside top 12 |
| Administration & office | – | – | 5 | 0% | outside top 12 |
| manufacturing and production | – | – | 1 | 0% | outside top 12 |
| procurement and purchasing | – | – | 1 | 0% | outside top 12 |
| Retail & store operations | – | – | 1 | 0% | outside top 12 |
| skilled trades and field service | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using FastAPI →
Companies using Spring Framework →
backend frameworks ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Spring Framework is named by 3,122 companies in job postings and FastAPI by 3,305; 0 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/fastapi-vs-spring-framework)
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.
FastAPI vs Spring Framework: questions
Which is more used, FastAPI or Spring Framework?
By companies naming it in their own job postings, FastAPI (3,305) over Spring Framework (3,122). By website-and-DNS footprint, Spring Framework (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses FastAPI?
54% of FastAPI companies have 2 to 200 employees, against 51% for Spring Framework. 22% of FastAPI companies have over 1,000 employees, against 25% for Spring Framework.
Do companies run both?
0 companies name both in their postings, usually FastAPI in marketing and Spring Framework 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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