NOTICE: Keep in mind that POP3ye is alpha software and by definition it is a long way from finished.
POP3ye is a fully featured web-based e-mailclient written in Object Oriented PHP 5. It ony supports the POP3 protocol.
Mail Commander is a multi-user mail-notify application.It supports multiple accounts per user, customizable alerts, built in mailclient, support for other mail clients, virus scan(third party app.), auto-reply, multi-protocol and mail preview and more.
XSpell is a spell checker for HTML forms. It is composed of a XML-RPC
based browser client written in Javascript and an XML-RPC service implemented in PHP 4+.