Estuary's tech stack
What does Estuary use?
Estuary (estuary.dev) uses at least 33 tools we can see from public records, including Microsoft 365 for email and documents, HubSpot for sales, Zendesk for customer support and Google Analytics for analytics. Last checked .
“Estuary is the right-time data platform that unifies CDC, streaming, batch and ETL pipelines into one dependable system. It powers AI, analytics and operational workloads with predictable pricing, flexible deployment and enterprise reliability.”
- Size
- 11–50 employees
- Based in
- New York, United States
- Company page
- Tools found
- 33
- Categories
- 14
- Oldest proven tool
- Dec 2021
- Changes seen
- 8
Estuary'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
2 tools, where the bytes are served from
CDN & Edge
Application
8 tools, what the product is built with
Frontend
Backend & Database
Media & UI
Data & Observability
5 tools, what they measure and store
Go-to-market
8 tools, how they find and keep customers
Marketing
Sales & CRM
Support & Docs
Company Ops
10 tools, what the team runs on day to day
Collaboration
What changed at Estuary
Recent starts and stops
- StartedFastly
- StartedGoogle Ads
- StartedGoogle Tag Manager
- Startedllms.txt
- StartedNooks
- StartedReddit Ads
- StartedVimeo
- StartedWarmly
Using since
Dates come from the first certificate of the subdomain that points at the tool.
Companies like Estuary also use
Tools common among companies with a similar stack that we haven't found at Estuary.
Companies with a stack like Estuary's
Ranked by shared tools, with rare tools counting more.
GovDashGovernment · 51–200 people16in common
ReductoEngineering, Product and Design · 11–50 people14in common
PalletInternet · 11–50 people12in common
InstrumentlB2B · 51–200 people17in common
SafetyWingInsurance · 51–200 people12in common
Pendopendo.io23in common
RilletSoftware · 11–50 people18in common
Tempo.ioInternet · 11–50 people13in common
Estuary tech stack FAQ
What tools does Estuary use?
As of October 2026, runsonwhat has found 33 tools at Estuary (estuary.dev) in public records. Edge & Hosting: Cloudflare and Fastly. Application: Vimeo, React and Anthropic. Data & Observability: Google Analytics, Google Tag Manager and web-vitals. Go-to-market: Google Ads, LinkedIn Insight Tag and HubSpot. Company Ops: Microsoft 365, Google Workspace and Apple Business. Last checked October 20, 2026.
What CRM does Estuary use?
Estuary uses HubSpot for its CRM, alongside Warmly and Nooks, according to runsonwhat (October 2026). runsonwhat found HubSpot through email records that authorize HubSpot and code on estuary.dev. HubSpot is used by 93,653 companies runsonwhat tracks.
What email provider does Estuary use?
Estuary 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 709,032 companies runsonwhat tracks.
What does Estuary use for customer support?
Estuary uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through Zendesk code on estuary.dev. Zendesk is used by 41,611 companies runsonwhat tracks.
What analytics tools does Estuary use?
Estuary uses Google Analytics for analytics, alongside Google Tag Manager and PostHog, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on estuary.dev. Google Analytics is used by 875,205 companies runsonwhat tracks.
What marketing software does Estuary use?
Estuary uses Short.io for marketing, according to runsonwhat (October 2026). runsonwhat found Short.io through a subdomain that points at Short.io, and Estuary has used it since at least December 2021. Short.io is used by 1,384 companies runsonwhat tracks.
How long has Estuary used Short.io?
Estuary has used Short.io since at least December 2021, going by the first public certificate of the estuary.dev subdomain that points at Short.io. Other long-running tools at Estuary include incident.io (since September 2024).
Does Estuary use Cloudflare?
Yes. runsonwhat found Cloudflare at Estuary through a DNS verification record for Cloudflare and DNS records. Cloudflare is a CDN & Edge tool used by 701,268 companies runsonwhat tracks.
Does Estuary use AI tools?
Yes. runsonwhat has found Anthropic and OpenAI at Estuary; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Estuary may use more AI tools than these.
Has Estuary changed tools recently?
Yes. On runsonwhat's rechecks, Estuary started using Fastly, Google Ads and Google Tag Manager (latest on October 9, 2026). A change counts only between two checks of estuary.dev done the same way.
Which companies have a tech stack similar to Estuary's?
The companies with the stacks most like Estuary's are GovDash, Reducto, Pallet and Instrumentl, according to runsonwhat (October 2026). Each shares 12 to 17 tools with Estuary, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what Estuary uses?
runsonwhat reads public records only. Of the 33 tools at Estuary, 15 were found through code on estuary.dev, 12 through DNS records, 3 through subdomains that point at the vendor, 2 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 estuary.dev 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.