# What does siku use?

siku (siku.de) shows public evidence of 18 tools, according to runsonwhat (last checked 2026-11-10).

- Industry: Toy Maker
- Size: 201–1,000 employees
- Based in: Germany
- Founded: 1921

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code |  |
| [PayPal](https://www.runsonwhat.com/reverse/paypal) | Payments & Billing | Website code |  |
| [Three.js](https://www.runsonwhat.com/reverse/threejs) | 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 |  |

## 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 |  |
| [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code |  |
| [Pinterest](https://www.runsonwhat.com/reverse/pinterest) | Ads & Pixels | DNS verification records |  |
| [Klaviyo](https://www.runsonwhat.com/reverse/klaviyo) | Marketing | DNS verification records |  |
| [Trusted Shops](https://www.runsonwhat.com/reverse/trusted-shops) | Marketing | Website code |  |
| [Shopware](https://www.runsonwhat.com/reverse/shopware) | Website & CMS | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, Website code |  |
| [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records |  |
| [Cookiebot](https://www.runsonwhat.com/reverse/cookiebot) | Security & Compliance | Website code |  |
| [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records |  |
| [Hornetsecurity](https://www.runsonwhat.com/reverse/hornetsecurity) | Security & Compliance | Email records |  |

## Recent changes at siku

- 2026-11-01: started using [Trusted Shops](https://www.runsonwhat.com/reverse/trusted-shops)
- 2026-10-09: started using [Hornetsecurity](https://www.runsonwhat.com/reverse/hornetsecurity)

## FAQ

### What tools does siku use?

As of November 2026, runsonwhat has found 18 tools at siku (siku.de) in public records. Application: jQuery, PayPal and Three.js. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: Microsoft 365, Apple Business and Cookiebot. Last checked November 10, 2026.

### What email provider does siku use?

siku uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and code on siku.de. Microsoft 365 is used by 736,661 companies runsonwhat tracks.

### What payment provider does siku use?

siku uses PayPal for payments and billing, according to runsonwhat (November 2026). runsonwhat found PayPal through PayPal code on siku.de. PayPal is used by 35,159 companies runsonwhat tracks.

### What analytics tools does siku use?

siku uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on siku.de. Google Analytics is used by 904,027 companies runsonwhat tracks.

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

siku uses Shopware for its website, according to runsonwhat (November 2026). runsonwhat found Shopware through Shopware code on siku.de. Shopware is used by 876 companies runsonwhat tracks.

### What marketing software does siku use?

siku uses Klaviyo for marketing, alongside Trusted Shops, according to runsonwhat (November 2026). runsonwhat found Klaviyo through a DNS verification record for Klaviyo. Klaviyo is used by 36,490 companies runsonwhat tracks.

### Does siku use jQuery?

Yes. runsonwhat found jQuery at siku through jQuery code on siku.de. jQuery is a Frontend tool used by 927,260 companies runsonwhat tracks.

### Has siku changed tools recently?

Yes. On runsonwhat's rechecks, siku started using Trusted Shops and Hornetsecurity (latest on November 1, 2026). A change counts only between two checks of siku.de done the same way.

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

The companies with the stacks most like siku's are König & Meyer GmbH & Co. KG, TerraristikShop.net, elforyn Onlineshop and KATE & KON - Fine Wine and Fancy Food, according to runsonwhat (November 2026). Each shares 5 to 8 tools with siku, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what siku uses?

runsonwhat reads public records only. Of the 18 tools at siku, 11 were found through code on siku.de, 5 through DNS records and 2 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and siku.de about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/siku.de (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.