RoundCube
RoundCube is free and open-source web-based IMAP email client.
Get all 91 companies using RoundCube
CSV with domain, country, industry, employees, funding, socials. Delivered by email.
Companies
91
Top Country
US
Top Industry
Internet
Adoption Insights
RoundCube is used by 91 companies in our database, representing approximately 0.00% of all tracked websites. The most common industry using RoundCube is Internet, and adoption is strongest in US.
Top Countries Using RoundCube
Top Industries Using RoundCube
Companies Using RoundCube
| Company | Domain | Country | Industry | Employees |
|---|---|---|---|---|
 Paubox | paubox.com | US | Cloud Security | 11-50 |
 Weblify AI | weblifyai.com | US | Artificial Intelligence (AI) | 11-50 |
 TechAdmirers | techadmirers.com | US | Artificial Intelligence (AI) | 11-50 |
 Tech Web Logistics | techweblogistics.com | US | Artificial Intelligence (AI) | — |
 Riseup.net | riseup.net | US | Communications Infrastructure | 101-250 |
 Bluepeak | mybluepeak.com | US | Internet | 101-250 |
 Namesco | names.co.uk | US | Domain Registrar | 101-250 |
 Combell | combell.com | BE | Web Browsers | 51-100 |
 Disroot | disroot.org | TH | Apps | 11-50 |
 UK-2 | uk2.net | GB | Domain Registrar | 101-250 |
Top Alternatives to RoundCube
Other Webmail technologies sorted by adoption
How We Detect RoundCube
The Web Radar detects RoundCube by analyzing HTTP headers, JavaScript variables, HTML source code, cookies, and DNS records across 3M+ websites. Our detection engine uses over 10,000+ pattern rules to ensure accurate identification. Browse all technologies →
Frequently Asked Questions
What is RoundCube?+
RoundCube is free and open-source web-based IMAP email client.
How many companies use RoundCube?+
91 companies in our database use RoundCube, representing approximately 0.00% of all tracked websites.
What industries use RoundCube the most?+
The top industries using RoundCube are Internet, Information Technology, Domain Registrar.
What countries use RoundCube the most?+
The top countries using RoundCube are US, GB, DE.
Is RoundCube popular?+
RoundCube is used by 91 companies, making it a notable Webmail technology based on adoption across our tracked websites.
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Browse DatasetsData last updated: June 2026