# What does ONSA Plus use? ONSA Plus (onsaplus.eu) shows public evidence of 17 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Energy Storage - Size: 1–10 employees - Based in: Košice-Juh, Slovakia - Founded: 1999 - LinkedIn: https://www.linkedin.com/company/onsaplus ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code | | | [Microsoft Clarity](https://www.runsonwhat.com/reverse/clarity) | Analytics | Website code | | | [UptimeRobot](https://www.runsonwhat.com/reverse/uptimerobot) | Monitoring | Custom domain | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | Website code | | | [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) | Marketing | Email records | | | [Dub](https://www.runsonwhat.com/reverse/dub) | Marketing | Custom domain | | | [Front](https://www.runsonwhat.com/reverse/front) | Support & Docs | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records | | | [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records | | | [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records | | | [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records | | ## Recent changes at ONSA Plus - 2026-10-20: started using [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp) ## FAQ ### What tools does ONSA Plus use? As of October 2026, runsonwhat has found 17 tools at ONSA Plus (onsaplus.eu) in public records. Edge & Hosting: Cloudflare. Application: jQuery and Anthropic. Data & Observability: Google Analytics, Microsoft Clarity and UptimeRobot. Go-to-market: Meta Pixel, Mailchimp and Dub. Company Ops: Google Workspace, Let's Encrypt and Sectigo. Last checked October 20, 2026. ### What email provider does ONSA Plus use? ONSA Plus 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 onsaplus.eu. Google Workspace is used by 401,624 companies runsonwhat tracks. ### What does ONSA Plus use for customer support? ONSA Plus uses Front for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Front through Front code on onsaplus.eu. Front is used by 410 companies runsonwhat tracks. ### What analytics tools does ONSA Plus use? ONSA Plus uses Google Analytics for analytics, alongside Microsoft Clarity, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on onsaplus.eu. Google Analytics is used by 876,185 companies runsonwhat tracks. ### What marketing software does ONSA Plus use? ONSA Plus uses Mailchimp for marketing, alongside Dub, according to runsonwhat (October 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 114,739 companies runsonwhat tracks. ### What monitoring tools does ONSA Plus use? ONSA Plus uses UptimeRobot for monitoring, according to runsonwhat (October 2026). runsonwhat found UptimeRobot through a subdomain that points at UptimeRobot. UptimeRobot is used by 3,041 companies runsonwhat tracks. ### Does ONSA Plus use jQuery? Yes. runsonwhat found jQuery at ONSA Plus through jQuery code on onsaplus.eu. jQuery is a Frontend tool used by 913,502 companies runsonwhat tracks. ### Does ONSA Plus use AI tools? Yes. runsonwhat has found Anthropic at ONSA Plus; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so ONSA Plus may use more AI tools than these. ### Has ONSA Plus changed tools recently? Yes. On runsonwhat's rechecks, ONSA Plus started using Mailchimp (latest on October 20, 2026). A change counts only between two checks of onsaplus.eu done the same way. ### Which companies have a tech stack similar to ONSA Plus's? The companies with the stacks most like ONSA Plus' are Clara Health, Double, the AI Coding Copilot, Real Steel — Raising the Bar in Plate Processing and Smallstep, according to runsonwhat (October 2026). Each shares 3 to 7 tools with ONSA Plus, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what ONSA Plus uses? runsonwhat reads public records only. Of the 17 tools at ONSA Plus, 6 were found through code on onsaplus.eu, 6 through DNS records, 2 through email records, 2 through subdomains that point at the vendor and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and onsaplus.eu about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/onsaplus.eu (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.