# What does Readwise use?

Readwise (readwise.io) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: Internet
- Size: 1–10 employees
- Based in: Toronto, Canada
- LinkedIn: https://www.linkedin.com/company/readwise

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code |  |
| [Render](https://www.runsonwhat.com/reverse/render) | Hosting & Cloud | Custom domain, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code |  |
| [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code |  |
| [New Relic](https://www.runsonwhat.com/reverse/newrelic) | Monitoring | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code |  |
| [Help Scout](https://www.runsonwhat.com/reverse/helpscout) | Support & Docs | Email records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Custom domain, Email records |  |
| [Cloudflare Turnstile](https://www.runsonwhat.com/reverse/turnstile) | Security & Compliance | Website code |  |
| [Postmark](https://www.runsonwhat.com/reverse/postmark) | Email Delivery | Email records |  |

## FAQ

### What tools does Readwise use?

As of October 2026, runsonwhat has found 15 tools at Readwise (readwise.io) in public records. Edge & Hosting: Cloudflare and Render. Application: jQuery and Google Fonts. Data & Observability: Google Analytics, Google Tag Manager and New Relic. Go-to-market: Google Ads, Meta Pixel and Help Scout. Company Ops: Google Workspace, SendGrid and Cloudflare Turnstile. Last checked October 20, 2026.

### What cloud does Readwise run on?

Readwise uses Render for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Render through a subdomain that points at Render and code on readwise.io. Render is used by 2,515 companies runsonwhat tracks.

### What email provider does Readwise use?

Readwise uses Google Workspace for email and office software, according to runsonwhat (October 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace and code on readwise.io. Google Workspace is used by 406,205 companies runsonwhat tracks.

### What does Readwise use for customer support?

Readwise uses Help Scout for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Help Scout through email records that authorize Help Scout. Help Scout is used by 2,937 companies runsonwhat tracks.

### What analytics tools does Readwise use?

Readwise uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on readwise.io. Google Analytics is used by 890,730 companies runsonwhat tracks.

### What monitoring tools does Readwise use?

Readwise uses New Relic for monitoring, according to runsonwhat (October 2026). runsonwhat found New Relic through New Relic code on readwise.io. New Relic is used by 17,067 companies runsonwhat tracks.

### Does Readwise use jQuery?

Yes. runsonwhat found jQuery at Readwise through jQuery code on readwise.io. jQuery is a Frontend tool used by 921,736 companies runsonwhat tracks.

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

The companies with the stacks most like Readwise's are Quantum Analytics, Hammr, AbjadPro and Rts Reliable Tax Service, according to runsonwhat (October 2026). Each shares 3 to 8 tools with Readwise, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Readwise uses?

runsonwhat reads public records only. Of the 15 tools at Readwise, 8 were found through code on readwise.io, 3 through email records, 2 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 readwise.io about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/readwise.io (updated October 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.