Leftbrain's tech stack
What does Leftbrain use?
Leftbrain (useleftbrain.com) uses at least 17 tools we can see from public records, including Fly.io for hosting, Microsoft 365 for email and documents, HubSpot for sales and Google Analytics for analytics. Last checked .
- Industry
- Accounting
- Size
- 11–50 employees
- Based in
- Los Angeles, United States
- Founded
- 2019
- Company page
- Tools found
- 17
- Categories
- 12
- Layers
- 5 of 5
- Last checked
- Oct 2026
Leftbrain'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
3 tools, where the bytes are served from
Application
5 tools, what the product is built with
Data & Observability
1 tool, what they measure and store
Analytics
Go-to-market
4 tools, how they find and keep customers
Website & CMS
Marketing
Sales & CRM
Company Ops
4 tools, what the team runs on day to day
Email Delivery
Security & Compliance
Leftbrain tech stack FAQ
What tools does Leftbrain use?
As of November 2026, runsonwhat has found 17 tools at Leftbrain (useleftbrain.com) in public records. Edge & Hosting: GoDaddy, Fastly and Fly.io. Application: jQuery, Font Awesome and Vimeo. Data & Observability: Google Analytics. Go-to-market: WordPress, Yoast SEO and HubSpot. Company Ops: Microsoft 365, Google Workspace and CookieYes. Last checked October 29, 2026.
What cloud does Leftbrain run on?
Leftbrain uses Fly.io for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Fly.io through Fly.io code on useleftbrain.com. Fly.io is used by 5,446 companies runsonwhat tracks.
What CRM does Leftbrain use?
Leftbrain uses HubSpot for its CRM, according to runsonwhat (November 2026). runsonwhat found HubSpot through email records that authorize HubSpot. HubSpot is used by 95,527 companies runsonwhat tracks.
What email provider does Leftbrain use?
Leftbrain uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 715,275 companies runsonwhat tracks.
What analytics tools does Leftbrain use?
Leftbrain uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on useleftbrain.com. Google Analytics is used by 899,650 companies runsonwhat tracks.
What is Leftbrain's website built with?
Leftbrain uses WordPress for its website, alongside Yoast SEO, according to runsonwhat (November 2026). runsonwhat found WordPress through WordPress code on useleftbrain.com. WordPress is used by 603,595 companies runsonwhat tracks.
Does Leftbrain use jQuery?
Yes. runsonwhat found jQuery at Leftbrain through jQuery code on useleftbrain.com. jQuery is a Frontend tool used by 925,567 companies runsonwhat tracks.
How does runsonwhat know what Leftbrain uses?
runsonwhat reads public records only. Of the 17 tools at Leftbrain, 10 were found through code on useleftbrain.com, 4 through email records and 3 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and useleftbrain.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.