Os33's tech stack
What does Os33 use?
Os33 (os33.com) uses at least 12 tools we can see from public records, including Microsoft 365 for email and documents, HubSpot for sales, Zendesk for customer support and HubSpot CMS for its website. Last checked .
- Industry
- Software
- Size
- 51–200 employees
- Based in
- New York, United States
- Founded
- 2010
- Company page
- Tools found
- 12
- Categories
- 8
- Layers
- 2 of 5
- Last checked
- Oct 2026
Os33'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.
Go-to-market
6 tools, how they find and keep customers
Website & CMS
Sales & CRM
Support & Docs
Company Ops
6 tools, what the team runs on day to day
Email Delivery
Workspace
Dev Tools
Security & Compliance
Os33 tech stack FAQ
What tools does Os33 use?
As of October 2026, runsonwhat has found 12 tools at Os33 (os33.com) in public records. Go-to-market: Mailchimp, HubSpot and Zendesk. Company Ops: Microsoft 365, Apple Business and Atlassian. Last checked October 6, 2026.
What CRM does Os33 use?
Os33 uses HubSpot for its CRM, alongside Salesforce, according to runsonwhat (October 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot and email records. HubSpot is used by 89,179 companies runsonwhat tracks.
What email provider does Os33 use?
Os33 uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 693,203 companies runsonwhat tracks.
What does Os33 use for customer support?
Os33 uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk. Zendesk is used by 39,961 companies runsonwhat tracks.
What is Os33's website built with?
Os33 uses HubSpot CMS for its website, according to runsonwhat (October 2026). runsonwhat found HubSpot CMS through a subdomain that points at HubSpot CMS. HubSpot CMS is used by 32,152 companies runsonwhat tracks.
What marketing software does Os33 use?
Os33 uses Mailchimp for marketing, according to runsonwhat (October 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 111,020 companies runsonwhat tracks.
Does Os33 use Atlassian?
Yes. runsonwhat found Atlassian at Os33 through a DNS verification record for Atlassian. Atlassian is a Dev Tools tool used by 64,169 companies runsonwhat tracks.
How does runsonwhat know what Os33 uses?
runsonwhat reads public records only. Of the 12 tools at Os33, 7 were found through email records, 3 through DNS records and 2 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and os33.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.