# What does 1st90 use?

1st90 (1st90.com) shows public evidence of 14 tools, according to runsonwhat (last checked 2026-11-14).

- Industry: Software
- Size: 11–50 employees
- Based in: San Francisco, United States
- Founded: 2018
- LinkedIn: https://www.linkedin.com/company/1st90

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code |  |
| [GoDaddy](https://www.runsonwhat.com/reverse/godaddy) | DNS | Custom domain |  |
| [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain |  |
| [Google Cloud](https://www.runsonwhat.com/reverse/gcp) | Hosting & Cloud | DNS records |  |
| [Amazon CloudFront](https://www.runsonwhat.com/reverse/cloudfront) | CDN & Edge | Custom domain |  |
| [Render](https://www.runsonwhat.com/reverse/render) | Hosting & Cloud | Custom domain, Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Squarespace](https://www.runsonwhat.com/reverse/squarespace) | Website & CMS | Website code |  |
| [Calendly](https://www.runsonwhat.com/reverse/calendly) | Sales & CRM | Website code |  |
| [beehiiv](https://www.runsonwhat.com/reverse/beehiiv) | Marketing | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records |  |
| [Oneleet](https://www.runsonwhat.com/reverse/oneleet) | Security & Compliance | DNS verification records |  |

## FAQ

### What tools does 1st90 use?

As of November 2026, runsonwhat has found 14 tools at 1st90 (1st90.com) in public records. Edge & Hosting: Cloudflare, GoDaddy and Amazon Web Services. Go-to-market: Squarespace, Calendly and beehiiv. Company Ops: Microsoft 365, SendGrid and Oneleet. Last checked November 14, 2026.

### What cloud does 1st90 run on?

1st90 uses Amazon Web Services for hosting and cloud infrastructure, alongside Google Cloud and Render, according to runsonwhat (November 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services. Amazon Web Services is used by 147,739 companies runsonwhat tracks.

### What sales tools does 1st90 use?

The sales tools runsonwhat has found at 1st90 are Calendly (November 2026); no CRM shows up in 1st90's public records. runsonwhat found Calendly through Calendly code on 1st90.com. Calendly is used by 31,523 companies runsonwhat tracks.

### What email provider does 1st90 use?

1st90 uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 739,097 companies runsonwhat tracks.

### What is 1st90's website built with?

1st90 uses Squarespace for its website, according to runsonwhat (November 2026). runsonwhat found Squarespace through Squarespace code on 1st90.com. Squarespace is used by 34,682 companies runsonwhat tracks.

### What marketing software does 1st90 use?

1st90 uses beehiiv for marketing, according to runsonwhat (November 2026). runsonwhat found beehiiv through beehiiv code on 1st90.com. beehiiv is used by 685 companies runsonwhat tracks.

### Does 1st90 use Cloudflare?

Yes. runsonwhat found Cloudflare at 1st90 through Cloudflare code on 1st90.com. Cloudflare is a CDN & Edge tool used by 737,693 companies runsonwhat tracks.

### Which companies have a tech stack similar to 1st90's?

The companies with the stacks most like 1st90's are Legion Health, Miter, Procurex and Tamarind Bio, according to runsonwhat (November 2026). Each shares 4 to 7 tools with 1st90, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what 1st90 uses?

runsonwhat reads public records only. Of the 14 tools at 1st90, 4 were found through code on 1st90.com, 4 through subdomains that point at the vendor, 3 through DNS records, 2 through email records and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and 1st90.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/1st90.com (updated November 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.