Roundcube Webmail is a is a browser-based multilingual IMAP client with an application-like user interface. It provides the full functionality you would expect from an e-mail client, including MIME support, address book, folder manipulation, message searching, calendar, notes and spell checking.
There are an array of plugins available for Roundcube but to date, there is no “Virtual Keyboard” plugin. A virtual keyboard is a software application which allows a user to enter characters via an onscreen keyboard. Unlike typing a password using a hardware keyboard, a virtual keyboard cannot be logged using a keystroke logger. This provides an additional layer of security and is particularly useful when using web mail from an Internet Cafe or other untrusted location.
I’ve compiled a package which includes a virtual keyboard interface and is available for download here. Installation instructions are included in the ZIP file.
You can view a demo of the virtual keyboard on Aorta’s Secure Email website at www.aorta.me.