# What does Lesterius use?

Lesterius (lesterius.com) shows public evidence of 18 tools, according to runsonwhat (last checked 2026-11-13).

- Industry: Software
- Size: 11–50 employees
- Based in: Sint-Denijs-Westrem, Belgium
- Founded: 1998
- LinkedIn: https://www.linkedin.com/company/lesterius

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [Vimeo](https://www.runsonwhat.com/reverse/vimeo) | Media & UI | Website code |  |
| [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code |  |
| [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records |  |
| [Wistia](https://www.runsonwhat.com/reverse/wistia) | Media & UI | Website code |  |
| [Mistral AI](https://www.runsonwhat.com/reverse/mistral) | AI | DNS verification records |  |

## 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 |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records |  |
| [Squarespace](https://www.runsonwhat.com/reverse/squarespace) | Website & CMS | Custom domain, DNS records, Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records |  |
| [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records |  |
| [URIports](https://www.runsonwhat.com/reverse/uriports) | Security & Compliance | Email records |  |
| [Flowmailer](https://www.runsonwhat.com/reverse/flowmailer) | Email Delivery | Email records |  |
| [Loom](https://www.runsonwhat.com/reverse/loom) | Collaboration | Website code |  |

## FAQ

### What tools does Lesterius use?

As of November 2026, runsonwhat has found 18 tools at Lesterius (lesterius.com) in public records. Edge & Hosting: Amazon Route 53. Application: jQuery, Vimeo and YouTube. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, Mailchimp and Squarespace. Company Ops: Microsoft 365, Mailjet and URIports. Last checked November 13, 2026.

### What email provider does Lesterius use?

Lesterius uses Microsoft 365 for email and office software, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 737,902 companies runsonwhat tracks.

### What analytics tools does Lesterius use?

Lesterius uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on lesterius.com. Google Analytics is used by 904,904 companies runsonwhat tracks.

### What is Lesterius's website built with?

Lesterius uses Squarespace for its website, according to runsonwhat (November 2026). runsonwhat found Squarespace through a subdomain that points at Squarespace and DNS records. Squarespace is used by 34,642 companies runsonwhat tracks.

### What marketing software does Lesterius use?

Lesterius uses Mailchimp for marketing, according to runsonwhat (November 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 119,368 companies runsonwhat tracks.

### Does Lesterius use jQuery?

Yes. runsonwhat found jQuery at Lesterius through jQuery code on lesterius.com. jQuery is a Frontend tool used by 927,876 companies runsonwhat tracks.

### Does Lesterius use AI tools?

Yes. runsonwhat has found OpenAI and Mistral AI at Lesterius; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so Lesterius may use more AI tools than these.

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

The companies with the stacks most like Lesterius' are Normal Computing, Verum Software Tools, Leaneo and Eivor Systems, SL, according to runsonwhat (November 2026). Each shares 4 to 9 tools with Lesterius, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Lesterius uses?

runsonwhat reads public records only. Of the 18 tools at Lesterius, 8 were found through code on lesterius.com, 5 through DNS records, 4 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and lesterius.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/lesterius.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.