Whitebeam is a complete rapid development Web application server integrating Apache, Posgresql, Mozilla's SpiderMonkey JavaScript engine with it's own powerful XML/XPath based secure application framework.
Patch / add-on for qmail, written in C and using PostgreSQL as database backend in order to implement an anti-spam method known as "greylisting". The patch behaves and performs nicely, while reducing resources needed for handling email traffic.
DBMail provides a database-backend mail store using PostgreSQL or MySQL. It includes POP3 and IMAP servers to access the mail store, pipe and LMTP for message delivery, and a suite of command line utilities. Please click our Home Page link for more info.