FastAPI on new websites
Python web framework for building APIs, using type hints for validation and generating interactive documentation.
92 sites
89 found by StackScope, 3 via launch platforms
- StackScope Wider Web 72
- StackScope Discovery (Indie) 17
- Product Hunt 2
- PeerPush 1
FastAPI appeared on about 35 new sites in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Python
NiceGUI
Percentages are the all-time share of FastAPI sites that also use each one.
Get told when a new site ships with FastAPI.
35 new sites with FastAPI first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using FastAPI, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workShare of new sites using FastAPI
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.
The shaded areas were measured against a different set of sites, so the line can step there without FastAPI itself changing.
Coverage details
Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.
Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.
What kind of sites use FastAPI
29 sites with a known type, all time
Domain endings using FastAPI
92 sites, all time
- .com 35.9%
- .app 6.5%
- .online 6.5%
- .site 5.4%
- .dev 4.4%
- .org 4.4%
- .tech 4.4%
- .xyz 4.4%
- .cloud 3.3%
- .fr 3.3%
- .io 3.3%
Backend Framework leaders
| Tool | % of sitesall time | % of categoryall time | ||
|---|---|---|---|---|
| #1 | – |
Express
|
1.7% | 46.1% |
| #2 | – |
Laravel
|
0.9% | 26.1% |
| #3 | – |
ASP.NET
|
0.6% | 17.2% |
| #4 | – |
Rails
|
0.2% | 6.2% |
| #5 | – |
Laravel Livewire
|
0.2% | 5.0% |
| … | ||||
| #21 | ▼1 |
FastAPI
Current page
|
<0.1% | <0.1% |
Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Backend Framework tool. All 137 in Backend Framework →
Recent launches using FastAPI
20 of the 92 sites using FastAPI are product launches we list individually. The other 72 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works
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inboxslide, AI-powered sales outreach
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Forever Cabs — Travel across Maharashtra, your way
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Sharvora Intelligence — x402 agent intelligence
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BrandMan — Your brand, under control
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RTOFlow | Training resource drafts for Australian RTOs
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Logiciel de gestion pour savonnerie artisanale | Savilys
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Koya - Private AI Chatbot for Business Knowledge, Voice and SaaS Workflows
Also detected
Zura AI | Read Any Document Instantly — IDs, Certificates, Invoices
Also detected
Showing the most recent 12 of 20.
The StackScope API serves all 92 sites using FastAPI, filterable and exportable, from £15 a month.