Blazor on new websites

Microsoft web UI framework for building interactive client and server rendered apps in C# instead of JavaScript.

#14 of 69 in Framework In our data since Apr 2026 Last seen: Oct 17, 2026 Most recent launch: Sistema para Estúdio de Pilates com App do Aluno | Agilitto Studio, Oct 17, 2026 Website: dotnet.microsoft.com

2,746 sites

2,650 found by StackScope, 96 via launch platforms

StackScope Wider Web 1,964 StackScope Discovery (Indie) 686 Product Hunt 68 PeerPush 14 Other 9 Hacker News 5
  • StackScope Wider Web 1,964
  • StackScope Discovery (Indie) 686
  • Product Hunt 68
  • PeerPush 14
  • Other 9
  • Hacker News 5

Blazor appeared on about 850 new sites in the last 30 days.

These figures cover websites that went live since April 2026, not the web as a whole.

Built on Blazor

Percentages are the all-time share of Blazor sites that also use each one.

Stackdar alerts

Get told when a new site ships with Blazor.

852 new sites with Blazor first seen in the last 30 days.

Stackdar watches every launch we detect and sends you the ones using Blazor, by email, Slack or webhook. On every plan, from £15 a month.

See how alerts work

Share of new sites using Blazor

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.

0.0%
last 7 days
-0.0pp vs prior week
0.0%
30 days to Oct 16
+0.0pp vs 30 days before
2,746
sites all time
since Apr 2026
Blazor daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 10 September 2026: we improved our infrastructure to index new sites much sooner, often on the day they go live, so the cohort this share is measured against changes here. 5% 2% 0% Apr May Jun Jul Aug Sep Oct Weekly averages before this point, daily after. Jul 19 · 8 / 27658 = 0.0% Jul 20 · 17 / 23989 = 0.1% Jul 21 · 17 / 22950 = 0.1% Jul 22 · 9 / 24375 = 0.0% Jul 23 · 14 / 18106 = 0.1% Jul 24 · 16 / 13982 = 0.1% Jul 25 · 8 / 9557 = 0.1% Jul 26 · 7 / 21757 = 0.0% Jul 27 · 16 / 37240 = 0.0% Jul 28 · 25 / 41893 = 0.1% Jul 29 · 38 / 53573 = 0.1% Jul 30 · 26 / 48272 = 0.1% Jul 31 · 26 / 56049 = 0.0% Aug 1 · 21 / 54896 = 0.0% Aug 2 · 32 / 53855 = 0.1% Aug 3 · 24 / 52619 = 0.0% Aug 4 · 17 / 40707 = 0.0% Aug 5 · 15 / 35352 = 0.0% Aug 6 · 19 / 39149 = 0.0% Aug 7 · 16 / 40251 = 0.0% Aug 8 · 21 / 42805 = 0.0% Aug 9 · 14 / 37782 = 0.0% Aug 10 · 22 / 32325 = 0.1% Aug 11 · 21 / 34560 = 0.1% Aug 12 · 17 / 37139 = 0.0% Aug 13 · 26 / 55476 = 0.0% Aug 14 · 39 / 56759 = 0.1% Aug 15 · 36 / 55912 = 0.1% Aug 16 · 42 / 56272 = 0.1% Aug 17 · 23 / 46231 = 0.0% Aug 18 · 29 / 56930 = 0.1% Aug 19 · 30 / 51729 = 0.1% Aug 20 · 35 / 69054 = 0.1% Aug 21 · 42 / 93882 = 0.0% Aug 22 · 36 / 94200 = 0.0% Aug 23 · 45 / 93612 = 0.0% Aug 24 · 29 / 81719 = 0.0% Aug 25 · 43 / 71545 = 0.1% Aug 26 · 28 / 66866 = 0.0% Aug 27 · 50 / 87843 = 0.1% Aug 28 · 40 / 87919 = 0.0% Aug 29 · 42 / 88071 = 0.0% Aug 30 · 34 / 100675 = 0.0% Aug 31 · 46 / 100252 = 0.0% Sep 1 · 38 / 103460 = 0.0% Sep 2 · 42 / 108916 = 0.0% Sep 3 · 36 / 103284 = 0.0% Sep 4 · 41 / 98541 = 0.0% Sep 5 · 45 / 102859 = 0.0% Sep 6 · 37 / 89273 = 0.0% Sep 7 · 41 / 86116 = 0.0% Sep 8 · 27 / 77972 = 0.0% Sep 9 · 41 / 75525 = 0.1% Sep 10 · 49 / 83684 = 0.1% Sep 11 · 36 / 85569 = 0.0% Sep 12 · 19 / 56769 = 0.0% Sep 13 · 27 / 57995 = 0.0% Sep 14 · 28 / 59233 = 0.0% Sep 15 · 31 / 58189 = 0.1% Sep 16 · 19 / 59080 = 0.0% Sep 17 · 22 / 56764 = 0.0% Sep 18 · 31 / 53086 = 0.1% Sep 19 · 25 / 45278 = 0.1% Sep 20 · 18 / 44762 = 0.0% Sep 21 · 33 / 51668 = 0.1% Sep 22 · 23 / 55408 = 0.0% Sep 23 · 25 / 58315 = 0.0% Sep 24 · 16 / 53471 = 0.0% Sep 25 · 25 / 50766 = 0.0% Sep 26 · 39 / 101521 = 0.0% Sep 27 · 24 / 52138 = 0.0% Sep 28 · 31 / 61122 = 0.1% Sep 29 · 42 / 77866 = 0.1% Sep 30 · 33 / 69724 = 0.0% Oct 1 · 29 / 69242 = 0.0% Oct 2 · 30 / 64807 = 0.0% Oct 3 · 25 / 53756 = 0.0% Oct 4 · 32 / 52064 = 0.1% Oct 5 · 35 / 63706 = 0.1% Oct 6 · 30 / 67608 = 0.0% Oct 7 · 15 / 67681 = 0.0% Oct 8 · 34 / 69341 = 0.0% Oct 9 · 30 / 70443 = 0.0% Oct 10 · 31 / 60667 = 0.1% Oct 11 · 38 / 65608 = 0.1% Oct 12 · 30 / 66670 = 0.0% Oct 13 · 32 / 71083 = 0.0% Oct 14 · 28 / 70741 = 0.0% Oct 15 · 25 / 93908 = 0.0% Oct 16 · 21 / 66761 = 0.0%
Mar 30, 2026 90 days Oct 16, 2026

The shaded areas were measured against a different set of sites, so the line can step there without Blazor 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.

How StackScope detects technologies

What kind of sites use Blazor

886 sites with a known type, all time

Productivity
13.7%
Games
11.3%
Finance
11.1%
Health
9.3%
Education
8.7%
E-commerce
6.6%
Social
5.4%
Marketing
4.1%
Content
3.7%
AI
2.9%
Design
1.1%
Crypto
0.6%
Directory
0.6%

Domain endings using Blazor

2,739 sites, all time

  • .com 53.2%
  • .app 7.6%
  • .net 5.0%
  • .uk 4.1%
  • .dev 3.1%
  • .org 2.4%
  • .online 2.3%
  • .in 1.9%
  • .io 1.9%
  • .ai 1.8%
  • .ca 1.6%
  • .se 1.4%
  • .fr 1.3%
  • .tech 1.1%
  • .cloud 1.0%

Country

Country likely for 410 of 2,746 sites (14.9%), all time.

How we know

Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.

  • United Kingdom United Kingdom 23.2%
  • India India 10.5%
  • France France 9.0%
  • Sweden Sweden 8.1%
  • Canada Canada 7.3%
  • United States United States 5.6%
  • Switzerland Switzerland 4.2%
  • Germany Germany 3.4%
  • Brazil Brazil 2.9%
  • Türkiye Türkiye 2.9%
  • Australia Australia 2.7%
  • Italy Italy 2.4%
  • New Zealand New Zealand 2.0%
  • Netherlands Netherlands 1.2%
  • Vietnam Vietnam 1.2%

Green hosting

95 checked sites since Apr 2026.

What this means

The share whose web host The Green Web Foundation lists as running on green energy, against the average for every new site we checked.

  • Blazor 47%
  • Average 47%

Framework leaders

Tool % of sitesall time % of categoryall time
#1 – React 26.8% 84.7%
#2 – Vue.js 2.7% 8.6%
#3 – Svelte 0.8% 2.4%
#4 – Alpine.js 0.6% 2.0%
#5 – Angular 0.3% 1.0%
…
#14 – Blazor 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 Framework tool. All 69 in Framework → Related categories: Meta Framework, Backend Framework

Often used with

Tool Sites vs all new sites
Kestrel 506 423x
ASP.NET 2,054 120x
Microsoft IIS 611 56x
jsDelivr 461 3.8x

Tools that turn up far more often on Blazor sites than on new sites in general, and how many times as common each one is there.

Recent launches using Blazor

782 of the 2,746 sites using Blazor are product launches we list individually. The other 1,964 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

Showing the most recent 12 of 782.

The StackScope API serves all 2,746 sites using Blazor, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.