KHWebMail
JSP-based web email system, support large numbers of concurrent users, multi-level folders, multiple-languages. By PLMatrix Technologies Company.
url: www.plmatrix.com/en/product/mailmatrix/index.html
RecipeMail
An advanced servlet-based webmail system, combining the functionality of desktop email with the accessibility of web based email. Requires no downloads or plugins for the end user, and can be used as a web based add-on to an existing mail server, or as a complete mail server package. [Commercial]
url: www.recipexperience.com/recipemail
Sake Mail
Servlet-based web email system, designed for scaling to large numbers of concurrent users. Intended for large universities or enterprise-level mail systems. [Commercial]
url: www.endymion.com/products/sake/mail/
WebMail
Web-based interface to Unix system mailboxes. Compare it to the systems Hotmail, and YahooMail use. [LGPL license]
url: jwebmail.sourceforge.net/
Webtop
A web-based POP3 email client that also includes a calendar, notepad, webdrive, automated email reminders, contacts, P2P sharing, and web-based administration. One installation can support multiple users and each user can setup as many POP3 accounts as they need. Servlet-based. [Shareware]
url: www.yourwebtop.com/
