Roundcube
Roundcube is an open source browser-based multilingual IMAP client with an application-like user interface.
Market Share of Roundcube
Current Customer(s)
242
Market Share (Est.)
0.07%
Ranking
#9
Top Competitors and Alternatives of Roundcube
The top three of Roundcube’s competitors in the Email Client category are Microsoft Outlook with 88.64%, Amazon WorkMail with 8.77%, Zimbra with 1.16% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| Microsoft Outlook | 288135 | 88.64% | Roundcube vs Microsoft Outlook |
| Amazon WorkMail | 28509 | 8.77% | Roundcube vs Amazon WorkMail |
| Zimbra | 3784 | 1.16% | Roundcube vs Zimbra |
| Yahoo Business Mail | 1826 | 0.56% | Roundcube vs Yahoo Business Mail |
| Salesforce Inbox | 1100 | 0.34% | Roundcube vs Salesforce Inbox |
| HCL Notes | 294 | 0.09% | Roundcube vs HCL Notes |
| Logix Cloud Email | 277 | 0.09% | Roundcube vs Logix Cloud Email |
| Apple Mail | 276 | 0.08% | Roundcube vs Apple Mail |
| MDaemon Email Server | 109 | 0.03% | Roundcube vs MDaemon Email Server |
| Gaggle Mail | 94 | 0.03% | Roundcube vs Gaggle Mail |
| eM Client | 85 | 0.03% | Roundcube vs eM Client |
| Afterlogic Webmail | 52 | 0.02% | Roundcube vs Afterlogic Webmail |
| Rambox | 49 | 0.02% | Roundcube vs Rambox |
| Hiri | 40 | 0.01% | Roundcube vs Hiri |
| PreVeil | 33 | 0.01% | Roundcube vs PreVeil |
| SmarterMail | 24 | 0.01% | Roundcube vs SmarterMail |
| HCL Verse | 21 | 0.01% | Roundcube vs HCL Verse |
| Canary Mail | 14 | 0.00% | Roundcube vs Canary Mail |
| Polymail | 13 | 0.00% | Roundcube vs Polymail |
| Thunderbird | 10 | 0.00% | Roundcube vs Thunderbird |
Popular Comparisons
Top Competitors and Alternatives of Roundcube
The top three of Roundcube’s competitors in the Email Client category are Microsoft Outlook with 88.64%, Amazon WorkMail with 8.77%, Zimbra with 1.16% market share.
Roundcube vs Microsoft Outlook
Roundcube vs Amazon WorkMail
Roundcube vs Zimbra
Roundcube vs Yahoo Business Mail
Roundcube vs Salesforce Inbox
Roundcube vs HCL Notes
Roundcube vs Logix Cloud Email
Roundcube vs Apple Mail
Customers of Roundcube
Around the world in 2026, over 237 companies have started using Roundcube as Email Client tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Locaweb | 10,000+ | Sao Paulo | Sao Paulo | Brazil |     |
| TargetHost | 10,000+ | Sao Paulo | Sao Paulo | Brazil | |
| UNIVERSIDADE FEDERAL DO PARA | 10,000+ | Belem | Para | Brazil | |
| Walgreens | 10,000+ | Deerfield | Illinois | United States | |
| DP World | 10,000+ | Dubai | Dubai | United Arab Emirates | |
| Humboldt - Universität Zu Berlin | 10,000+ | Berlin | Berlin | Germany | |
| UNIVERSITY OF MASSACHUSETTS AMHERST | 10,000+ | Amherst | Massachusetts | United States | |
| American Electric Power | 10,000+ | Columbus | Ohio | United States | |
| Atos | 10,000+ | Bezons | Ile-de-France | France | |
| TIM | 10,000+ | Milan | Lombardy | Italy | |
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Roundcube Customers by Products and Services
The top three products and services offering customers that use Roundcube for Email Client are Cloud Services (10), Cybersecurity (10), Hosting (9).
Customers
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Roundcube Customers by Employee Size
The majority of Roundcube's customers for the email-client category fall in the company size of 100 - 249 employees (53 companies), 20 - 49 employees (50 companies), 0 - 9 employees (31 companies).
Employee Size
Roundcube Customers by Geography
The top three geographies of Roundcube for email-client are the United States with 53(34.64%), Brazil with 21(13.73%), India with 13(8.50%) customers respectively.
Customers
Employees of Roundcube
Also see other Products/Services by Roundcube in:
FAQ
Find answers to the most often asked questions by users.
Who are the top Roundcube competitors?
Roundcube’s Top competitors in the email-client category are Microsoft Outlook, Amazon WorkMail, Zimbra. You can view a full list of Roundcube competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Roundcube and 40,000 other technologies on the internet. You can also compare Roundcube and its feature with top competitors here : Roundcube vs Microsoft Outlook Roundcube vs Amazon WorkMail Roundcube vs Zimbra.
What is Roundcube customer distribution based on company size?
What is Roundcube market share in the email-client?
What are the top countries that use Roundcube?
What are the top industries that use Roundcube?
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