# What does Return use?

Return (return.energy) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-25).

- Industry: Venture Capital & Private Equity
- Size: 11–50 employees
- Based in: Amsterdam, Netherlands
- LinkedIn: https://www.linkedin.com/company/stecc-group

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code |  |
| [DNSimple](https://www.runsonwhat.com/reverse/dnsimple) | DNS | DNS records |  |

## 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 |  |
| [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records |  |
| [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Plausible](https://www.runsonwhat.com/reverse/plausible) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Webflow](https://www.runsonwhat.com/reverse/webflow) | Website & CMS | Custom domain, Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records, Website code |  |
| [Postmark](https://www.runsonwhat.com/reverse/postmark) | Email Delivery | Email records |  |
| [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | DNS verification records |  |
| [monday.com](https://www.runsonwhat.com/reverse/monday) | Collaboration | DNS verification records |  |
| [Oneleet](https://www.runsonwhat.com/reverse/oneleet) | Security & Compliance | DNS verification records |  |
| [Factorial](https://www.runsonwhat.com/reverse/factorial) | People & HR | DNS verification records |  |

## Recent changes at Return

- 2026-10-25: started using [Postmark](https://www.runsonwhat.com/reverse/postmark)

## FAQ

### What tools does Return use?

As of October 2026, runsonwhat has found 15 tools at Return (return.energy) in public records. Edge & Hosting: Cloudflare and DNSimple. Application: jQuery, Google Fonts and Anthropic. Data & Observability: Plausible. Go-to-market: Webflow. Company Ops: Microsoft 365, Postmark and Slack. Last checked October 25, 2026.

### What email provider does Return use?

Return uses Microsoft 365 for email and office software, 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 712,555 companies runsonwhat tracks.

### What analytics tools does Return use?

Return uses Plausible for analytics, according to runsonwhat (October 2026). runsonwhat found Plausible through Plausible code on return.energy. Plausible is used by 7,152 companies runsonwhat tracks.

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

Return uses Webflow for its website, according to runsonwhat (October 2026). runsonwhat found Webflow through a subdomain that points at Webflow and code on return.energy. Webflow is used by 34,995 companies runsonwhat tracks.

### What does Return use for hiring and HR?

Return uses Factorial for hiring and HR, according to runsonwhat (October 2026). runsonwhat found Factorial through a DNS verification record for Factorial. Factorial is used by 371 companies runsonwhat tracks.

### Does Return use jQuery?

Yes. runsonwhat found jQuery at Return through jQuery code on return.energy. jQuery is a Frontend tool used by 918,321 companies runsonwhat tracks.

### Does Return use AI tools?

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

### Has Return changed tools recently?

Yes. On runsonwhat's rechecks, Return started using Postmark (latest on October 25, 2026). A change counts only between two checks of return.energy done the same way.

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

The companies with the stacks most like Return's are Aqs Logistic Systems, HYROX, Galler Lager- Und Regaltechnik and Ohra Regalanlagen, according to runsonwhat (October 2026). Each shares 3 to 8 tools with Return, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Return uses?

runsonwhat reads public records only. Of the 15 tools at Return, 8 were found through DNS records, 4 through code on return.energy, 2 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 return.energy about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/return.energy (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.