FastAPI on new websites
Python web framework for building APIs, using type hints for validation and generating interactive documentation.
- Sites using FastAPI
- 93
- since Apr 2026
- Last 30 days
- 0.0%
-
of new sites, to Oct 18
no change on the 30 days before - Last 7 days
- 0.0%
- of new sites, 7-day average
no change on the week before
| In our data since | Apr 2026 |
|---|---|
| Last seen | Oct 18, 2026 |
| Website | fastapi.tiangolo.com |
What we found
- FastAPI appeared on about 35 new sites in the last 30 days.[1]
- Seven in ten new FastAPI sites also use Vue.js.
Share of new sites using FastAPI
The line is the 7-day average share of new sites that use FastAPI, since 10 September.
What FastAPI runs on, and what runs on it
Python
NiceGUI
Percentages are the all-time share of FastAPI sites that also use each one.
Who uses FastAPI
| Type | Sites | Share | Bar |
|---|---|---|---|
| Developer Tools | 13 | 43.3% | |
| Finance | 4 | 13.3% | |
| Marketing | 3 | 10.0% | |
| Health | 2 | 6.7% | |
| Productivity | 2 | 6.7% | |
| AI | 1 | 3.3% | |
| Content | 1 | 3.3% | |
| Crypto | 1 | 3.3% | |
| Design | 1 | 3.3% | |
| Education | 1 | 3.3% | |
| Games | 1 | 3.3% |
| Ending | Sites | Share | Bar |
|---|---|---|---|
| .com | 34 | 36.6% | |
| .app | 6 | 6.5% | |
| .online | 6 | 6.5% | |
| .site | 5 | 5.4% | |
| .dev | 4 | 4.3% | |
| .org | 4 | 4.3% | |
| .tech | 4 | 4.3% | |
| .xyz | 4 | 4.3% | |
| .cloud | 3 | 3.2% | |
| .fr | 3 | 3.2% | |
| .io | 3 | 3.2% |
Backend Framework on new sites
| # | Movement | Tool | Share of category[2] | Bar | |
|---|---|---|---|---|---|
| 1 | – |
Express
|
46.2% | ||
| 2 | – |
Laravel
|
25.9% | ||
| 3 | – |
ASP.NET
|
17.3% | ||
| 4 | – |
Rails
|
6.2% | ||
| 5 | – |
Laravel Livewire
|
5.0% | ||
| … | |||||
| 21 | ▼1 |
FastAPI
|
<0.1% | ||
All-time shares across the new sites we track: of all of them, and of the sites using any Backend Framework tool. All 140 in Backend Framework
Often used with FastAPI
Recently launched products built on FastAPI
20 of the 93 sites using FastAPI are product launches we list individually. The other 73 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.
China
India
Russia
Australia
Showing the most recent 12 of 20.
Watches, exports and the API give you all 93 sites using FastAPI, from £15 a month.
Notes
- These figures cover websites that went live since April 2026, not the web as a whole.
- Some products people expect to see here are filed under a related category: Framework, Programming Language.
How this page is made
FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards FastAPI when we detect FastAPI on it at that look.
Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites