runsonwhat

Duolingo's tech stack

What does Duolingo use?

Duolingo (duolingo.com) uses at least 47 tools we can see from public records, including Amazon Web Services for hosting, Microsoft 365 for email and documents, Salesforce for sales and Zendesk for customer support. Last checked .

Based in
United States
Re-check liveVisit duolingo.com
Tools found
47
Categories
21
Oldest proven tool
Sep 2017
Last checked
Oct 2026

Duolingo's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

6 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

DNS

Application

6 tools, what the product is built with

Frontend

AI

Payments & Billing

Media & UI

Data & Observability

5 tools, what they measure and store

Monitoring

Analytics

Go-to-market

13 tools, how they find and keep customers

Website & CMS

Marketing

Ads & Pixels

Sales & CRM

Support & Docs

Company Ops

17 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

Dev Tools

People & HR

Finance & Legal

Security & Compliance

What changed at Duolingo

Using since

Dates come from the first certificate of the subdomain that points at the tool.

  1. Atlassian Statuspage
  2. GitHub Pages
  3. Pardot
  4. Ghost
  5. Notified
  6. Shopify
  7. Grafana

Companies like Duolingo also use

Tools common among companies with a similar stack that we haven't found at Duolingo.

Companies with a stack like Duolingo's

Ranked by shared tools, with rare tools counting more.

Duolingo tech stack FAQ

What tools does Duolingo use?

As of October 2026, runsonwhat has found 47 tools at Duolingo (duolingo.com) in public records. Edge & Hosting: Amazon Web Services, Amazon Route 53 and Amazon CloudFront. Application: Google Fonts, React and Anthropic. Data & Observability: Google Analytics, Google Tag Manager and Sentry. Go-to-market: Google Ads, Meta Pixel and Mailchimp. Company Ops: Microsoft 365, Google Workspace and reCAPTCHA. Last checked October 7, 2026.

What cloud does Duolingo run on?

Duolingo uses Amazon Web Services for hosting and cloud infrastructure, alongside Vercel, Alibaba Cloud and GitHub Pages, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on duolingo.com. Amazon Web Services is used by 144,839 companies runsonwhat tracks.

What CRM does Duolingo use?

Duolingo uses Salesforce for its CRM, according to runsonwhat (October 2026). runsonwhat found Salesforce through email records that authorize Salesforce and code on duolingo.com. Salesforce is used by 33,474 companies runsonwhat tracks.

What email provider does Duolingo use?

Duolingo uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 701,696 companies runsonwhat tracks.

What does Duolingo use for customer support?

Duolingo uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk and code on duolingo.com. Zendesk is used by 40,918 companies runsonwhat tracks.

What payment provider does Duolingo use?

Duolingo uses Stripe for payments and billing, according to runsonwhat (October 2026). runsonwhat found Stripe through a DNS verification record for Stripe and code on duolingo.com. Stripe is used by 26,307 companies runsonwhat tracks.

How long has Duolingo used Atlassian Statuspage?

Duolingo has used Atlassian Statuspage since at least September 2017, going by the first public certificate of the duolingo.com subdomain that points at Atlassian Statuspage. Other long-running tools at Duolingo include GitHub Pages (since November 2017), Pardot (since March 2018) and Ghost (since February 2020).

Does Duolingo use Google Fonts?

Yes. runsonwhat found Google Fonts at Duolingo through Google Fonts code on duolingo.com. Google Fonts is a Media & UI tool used by 791,001 companies runsonwhat tracks.

Does Duolingo use AI tools?

Yes. runsonwhat has found Anthropic and OpenAI at Duolingo; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Duolingo may use more AI tools than these.

Which companies have a tech stack similar to Duolingo's?

The companies with the stacks most like Duolingo's are Faire, Hyland Software, OutSystems and Netlify, according to runsonwhat (October 2026). Each shares 16 to 18 tools with Duolingo, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

How does runsonwhat know what Duolingo uses?

runsonwhat reads public records only. Of the 47 tools at Duolingo, 18 were found through DNS records, 13 through code on duolingo.com, 9 through subdomains that point at the vendor, 6 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and duolingo.com about monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.