 | |
 | |
| Developer(s) | The Roundcube Team[1] |
|---|---|
| Initial release | 2008; 17 years ago (2008) |
| Stable release | 1.6.10[2]  / 8 February 2025 |
| Repository | |
| Written in | PHP |
| Operating system | Cross-platform |
| Type | Webmail |
| License | GPL-3.0-or-later with exceptions for skins and plugins[3] |
| Website | roundcube |
Roundcube is a web-basedIMAP email client. It makes extensive use ofAjax technology. Roundcube is licensed under theGNU GPL version 3 or later, with exceptions for skins and plugins.[3]
After about two years of development the first stable release of Roundcube was announced in early 2008.[4]
On 3 May 2015, Roundcube announced, in partnership withKolab Systems AG, that they planned to completely rewrite Roundcube and create Roundcube Next. Acrowdfunding campaign was set up to finance the project. The goal of $80,000 was reached on June 24.[5] The final amount raised was US$103,541.[6] Roundcube Next was intended to include additional features like calendar, chat and file management. This was to be implemented usingWebRTC and connectors from popular services likeDropbox andOwnCloud. However, Kolab Systems and Roundcube stopped development on the project in 2016, with no information or refunds provided to project backers, leading to a failed crowdfund.[7] A Roundcube developer later claimed Roundcube had no ownership over the Roundcube Next campaign,[8] despite its public engagement and ownership on the crowdfund page.
In 2023, a pro-Russia hacking group Winter Vivern[9] exploited across-site scripting vulnerability to attack European government entities and a think tank, as reported by researchers fromESET.[10] After opening a malicious email, the exploit could access folders and emails in that user's account and send those emails to the attackers' servers.[11]
In November 2023, the open-source file hosting software suiteNextcloud announced its partnership with Roundcube.[12][13]
Roundcube is written inPHP and can be employed in conjunction with aLAMP stack, or any other operating systems that support PHP are supported as well. The web server needs access to the IMAP server hosting the email and to anSMTP server to be able to send messages.
Roundcube Webmail is designed to run on standard web servers such asApache,LiteSpeed,Nginx,Lighttpd,Hiawatha orCherokee in conjunction with a relational database engine. Supported databases areMySQL,PostgreSQL andSQLite. The user interface is rendered inXHTML andCSS and is fully customizable with skins.
Roundcube incorporatesjQuery as part of its distribution, as well as other libraries such as GoogieSpell andTinyMCE.
Roundcube comes included withCPanel as of early 2008.
{{cite web}}: CS1 maint: date and year (link)