-improxy is a Instant Message Proxy.
+popproxy is a POP3 proxy.
-Its primary focus is XMPP transparent proxying. It should be able to:
+It may be used as a reverse proxy mainly, but extending it to work as a
+gateway proxy based on username is possible.
-* find out which server the client is connecting to and connect to it
-using its SRV record.
-
-* control which servers can be connected to and which users should be
-able to connect.
-
-* filter XML stanzas by from an to (control which entities you send data
-to or receive data from).
+It currently is able to control access based in username and has some
+SSL support.