Tamasu's tech stack
What does Tamasu use?
Tamasu (butterfly.co.jp) uses at least 10 tools we can see from public records, including Microsoft 365 for email and documents, Google Analytics for analytics and OpenAI for AI. Last checked .
- Size
- 51–200 employees
- Based in
- Asagayaminami, Japan
- Founded
- 1950
- Company page
- Tools found
- 10
- Categories
- 7
- Layers
- 4 of 5
- Last checked
- Oct 2026
Tamasu'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.
Application
3 tools, what the product is built with
Data & Observability
3 tools, what they measure and store
Go-to-market
3 tools, how they find and keep customers
Marketing
Ads & Pixels
Company Ops
1 tool, what the team runs on day to day
Workspace
Tamasu tech stack FAQ
What tools does Tamasu use?
We've found 10 tools at Tamasu (butterfly.co.jp). Application: jQuery, Google Fonts and OpenAI. Data & Observability: Google Analytics, Google Tag Manager and Microsoft Clarity. Go-to-market: Meta Pixel and Google Ads. Company Ops: Microsoft 365. Last checked October 2, 2026.
What email provider does Tamasu use?
Tamasu uses Microsoft 365 for email and documents. We found Microsoft 365 through DNS verification records and email records.
What analytics tools does Tamasu use?
Tamasu uses Google Analytics, Google Tag Manager and Microsoft Clarity for analytics. We found Google Analytics through website code.
Does Tamasu use Microsoft 365?
Yes. We found Microsoft 365 at Tamasu through DNS verification records and email records. Microsoft 365 is used by 245,233 companies we track.
How does runsonwhat know what Tamasu uses?
We read public traces only: Tamasu'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.