oMail-webmail is a Webmail solution for mail servers based on qmail and optionally vmailmgr or vpopmail. The mail is read directly from maildirs on the hard disk, which is much quicker than using protocols like POP3 or IMAP. Other features includes multiple language support (English, French, German, Japanese, Chinese, and many more), HTML and pictures inline display, folders, and address book support.
BrowserExpress is a Web-based e-mail client. BrowserExpress provides a Web browser interface to any mail server, giving all your users Web-based e-mail from any Web browser. The BrowserExpress interface is fully customizable to support your branding, banner advertisements, and language choice. BrowserExpress implements POP3, SMTP, LDAP, and MIME standards.