When's tech stack
What does When use?
When (forwhen.com) uses at least 21 tools we can see from public records, including Google Cloud for hosting, Microsoft 365 for email and documents, Zendesk for customer support and Google Analytics for analytics. Last checked .
- Industry
- Internet
- Size
- 11–50 employees
- Based in
- Chicago, United States
- Founded
- 2020
- Company page
- Tools found
- 21
- Categories
- 14
- Layers
- 5 of 5
- Last checked
- Oct 2026
When'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
1 tool, where the bytes are served from
Hosting & Cloud
Application
4 tools, what the product is built with
Data & Observability
4 tools, what they measure and store
Go-to-market
4 tools, how they find and keep customers
Company Ops
8 tools, what the team runs on day to day
Email Delivery
Dev Tools
Security & Compliance
Companies like When also use
Tools common among companies with a similar stack that we haven't found at When.
Companies with a stack like When's
Ranked by shared tools, with rare tools counting more.
Dedalus Labs, Inc.Infrastructure · 1–10 people7in common
OpenmarketsFinancial Services · 51–200 people11in common
BonsaiFinance and Accounting · 11–50 people7in common
Lugg, Inc.Home and Personal · 11–50 people7in common
FreedayArtificial Intelligence · 11–50 people10in common
TrussBanking and Exchange · 11–50 people5in common
ClerkyLegal · 11–50 people4in common
OoodlesFinancial Services · 11–50 people7in common
More Internet companies
Other Internet companies we've checked.
When tech stack FAQ
What tools does When use?
We've found 21 tools at When (forwhen.com). Edge & Hosting: Google Cloud. Application: Google Fonts, React and Anthropic. Data & Observability: Google Analytics, Google Tag Manager and Atlassian Statuspage. Go-to-market: Zendesk, Klaviyo and Framer. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 4, 2026.
What cloud does When run on?
When uses Google Cloud for hosting. We found Google Cloud through DNS records.
What email provider does When use?
When uses Microsoft 365, Google Workspace and Apple Business for email and documents. We found Microsoft 365 through DNS verification records.
What does When use for customer support?
When uses Zendesk and Scalar for customer support. We found Zendesk through custom domain and email records.
What analytics tools does When use?
When uses Google Analytics, Google Tag Manager and Mixpanel for analytics. We found Google Analytics through website code.
What CMS does When use?
When uses Framer for its website. We found Framer through custom domain and website code.
Does When use Microsoft 365?
Yes. We found Microsoft 365 at When through DNS verification records. Microsoft 365 is used by 682,815 companies we track.
How does runsonwhat know what When uses?
We read public traces only: When's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website 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.