Calif's tech stack
What does Calif use?
Calif (calif.io) uses at least 11 tools we can see from public records, including Google Cloud for hosting, Substack for its website, Fastly for content delivery and 1Password for security. Last checked .
- Company page
- Tools found
- 11
- Categories
- 8
- Layers
- 5 of 5
- Last checked
- Nov 2026
Calif's stack, layer by layer
Of 11 tools, 5 came from DNS verification records, 3 from custom domain, 2 from website code and 1 from other records. 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
Hosting & Cloud
CDN & Edge
Application
3 tools, what the product is built with
Backend & Database
Data & Observability
1 tool, what they measure and store
Analytics
Go-to-market
1 tool, how they find and keep customers
Website & CMS
Company Ops
4 tools, what the team runs on day to day
Security & Compliance
Companies like Calif also use
Tools common among companies with a similar stack that we haven't found at Calif.
Companies with a stack like Calif's
Ranked by shared tools, with rare tools counting more.
ATM HoldingsIT Services · 11–50 people2in common
PoliticusUSApoliticususa.com3in common
CBS Newscbsnews.com7in common
The Orwell FoundationNon-profit Organization Management · 1–10 people3in common
SubVysionConstruction · 1–10 people5in common
Comfy OrgSoftware · 1–10 people6in common
Earn AllianceEntertainment · 11–50 people3in common
Charlie RoseBroadcast Media · 1–10 people3in common
Calif tech stack FAQ
What tools does Calif use?
As of November 2026, runsonwhat has found 11 tools at Calif (calif.io) in public records. Edge & Hosting: Google Cloud and Fastly. Application: Anthropic, OpenAI and Firebase. Data & Observability: Google Analytics. Go-to-market: Substack. Company Ops: Microsoft 365, Google Workspace and Apple Business. Last checked November 9, 2026.
What cloud does Calif run on?
Calif uses Google Cloud for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Google Cloud through a subdomain that points at Google Cloud and DNS records. Google Cloud is used by 77,804 companies runsonwhat tracks.
What email provider does Calif use?
Calif uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 734,165 companies runsonwhat tracks.
What analytics tools does Calif use?
Calif uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on calif.io. Google Analytics is used by 903,937 companies runsonwhat tracks.
What is Calif's website built with?
Calif uses Substack for its website, according to runsonwhat (November 2026). runsonwhat found Substack through a subdomain that points at Substack. Substack is used by 422 companies runsonwhat tracks.
Does Calif use Anthropic?
Yes. runsonwhat found Anthropic at Calif through a DNS verification record for Anthropic. Anthropic is a AI tool used by 72,281 companies runsonwhat tracks.
Does Calif use AI tools?
Yes. runsonwhat has found Anthropic and OpenAI at Calif; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so Calif may use more AI tools than these.
Which companies have a tech stack similar to Calif's?
The companies with the stacks most like Calif's are ATM Holdings, PoliticusUSA, CBS News and The Orwell Foundation, according to runsonwhat (November 2026). Each shares 2 to 7 tools with Calif, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.
How does runsonwhat know what Calif uses?
runsonwhat reads public records only. Of the 11 tools at Calif, 5 were found through DNS records, 3 through subdomains that point at the vendor, 2 through code on calif.io and 1 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and calif.io 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.