Unimus - Unimus is a Network Automation and Configuration management (NCM) solution designed for fast deployment network-wide and ease of use. Unimus does not require learning any abstraction or templating languages, and does not require any coding skills.

Cryoserver - Cryoserver is an all-in-one email archiving solution that empowers you to preserve your email in a tamper-evident archive, making you transform your data into a useful archive for everyday use.

Oxidized - configuration backup software (IOS, JunOS) - silly attempt at rancid

Gmvault - Backup the emails in your Gmail account.

RANCID - RANCID - Really Awesome New Cisco confIg Differ.

imapsync - Console-based utility for migrating IMAP mailboxes.