Companies Using Flutter

As of our September 2026 crawl, 7,393 domains run a Flutter web build and 4,122 of them match a company record. Before reading anything into those numbers, it's worth being clear about what they leave out, because for Flutter the part we can't see is the larger part.

This page counts Flutter on the web, and that's the smaller part of Flutter

Flutter is mainly a mobile framework. Most teams use it to ship one Dart codebase to iOS and Android, and those apps reach users through app stores. A web crawler never downloads an app binary, so every one of those apps is invisible to us. We only see Flutter when it runs in a browser, through the _flutter.loader object and the related globals and meta tag a Flutter web build emits.

That matters for the question most people bring to a page like this. Search for companies using Flutter or apps built with Flutter and you get curated lists of mobile apps. This page answers a different question: where Flutter is doing work on the open web, and for whom. A company can ship a Flutter app to millions of phones and still not appear here.

On the web, Flutter is an application, not a website

The named list makes the deployment pattern plain. 48 of the top 50 companies run Flutter on a subdomain, not their main site: empresas.correios.com.br for the Brazilian post office's business customers, applicationform.heromotocorp.com, meuplano2.tim.com.br, investor-web.hdfcfund.com, ca24.credit-agricole.pl. Across the whole base, 1,488 domains carry the detection on an app. host.

Prudential is the clearest case. Four of the top 50 rows are the same pruservices application on Prudential hosts in the Philippines, Malaysia (two) and Singapore. That's one product team, counted four times, and it's a good reminder to collapse rows by parent company before sizing anything.

This is the shape you'd predict from how Flutter renders. It draws its own interface instead of producing ordinary HTML text, which suits a logged-in tool and suits a content page badly. So the brand runs its marketing site on a CMS and puts the Flutter app behind the login.

"Flutter on the web shows up where the page is an app in all but name: a policyholder portal, a plan manager, a booking screen. 48 of the 50 best-known companies in our list keep it off their main site." - Mehmet Suleyman, CEO and co-founder at TechnologyChecker.io

Who builds with it

64.65% of matched companies have 1 to 10 employees and 20.82% have 11 to 50. 52.16% were founded in the 2020s. That is a base of young, small product companies, most likely building web and mobile from one codebase because they can't staff two front-end teams. Software Development (12.36%), Technology, Information and Internet (9.21%) and IT Services (6.52%) add up to 28.09%.

The enterprise tail is concentrated in finance. OTP Bank, CIB Bank, Credit Agricole Poland, Bidvest Bank, King Price, CIC Insurance, Generali Central and Prudential all appear in the top 50, nearly always as a customer self-service tool. Geography follows: India (449 matched companies) and Brazil (300) together outnumber the United States (616), and their named companies are mostly portal builders.

The stack is Google's

Firebase runs on 52.83% of Flutter web domains, Google Sign-in on 23.33% and Google Analytics on 39.84%. Google makes the UI toolkit, the language and the back end, and a large share of Flutter teams take all three. Amazon Web Services (11.46%) and Vercel (5.08%) are the main exceptions on the hosting side.

The CMS rows tell you about the other host on the same domain. WordPress on 14.78%, Elementor on 7.77% and Webflow on 3.45% are the marketing sites standing next to the Flutter app, which fits the deployment pattern above.

Why there's no share, no trend and no migration table

No share. The Mobile Frameworks category is led by Onsen UI at 769,904 domains, and that row is overcounted: its script-name match also catches cookie-consent files, and a sample of 12 of its domains turned up 7 consent scripts and no Onsen UI at all. Any share computed against it would mislead, so we don't print one.

No trend. The chart moves from 3,376 domains in June 2026 to 7,393 in September, and 3,575 of today's live domains were first seen in August or September. The domains we crawl turn over every month and our detection has widened onto application subdomains, so the slope measures us as much as Flutter.

No migration table. We tested switching against React, Angular, Vue and the category's other libraries. The largest flow, 667 domains from React, sits at exactly twice the chance rate, and 480 of them landed in August, the same month our coverage widened. That's not a corridor we'd publish.

Using this list

Treat a Flutter web detection as evidence of a product team with Dart skills and usually a Firebase back end, not of a company-wide technology choice. For startups, filter on 1 to 50 employees and Firebase. For enterprise, look for app., my. and portal. hosts at banks, insurers and telecoms in Brazil, India and Europe, and collapse the rows by parent company.

The full list of 7,393 Flutter web domains, with detection hosts and firmographics for the 4,122 matched companies, is available at TechnologyChecker.io.