cyrus2courier is a nice little tool to convert a single mailbox from Cyrus-Imap into the Maildir++ format used by the Courier-Imap and Dovecot IMAP servers.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
This release includes some 64bit fixes, code to preserve UIDs, support for Cyrus-Imap 2.0/2.1, hashed Cyrus-Imap subscribe/quota directories, and support for Dovecot-compatible output.
