Try SysTools Gmail Backup tool to export Gmail emails, contacts, calendars and Google drive storage files into multiple file formats. This tool also takes the backup of Google Docs / Spreadsheets / Slides / Images. For more info, visit its official website: https://www.systoolsgroup.com/gmail-backup.html
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.
Gmvault - Backup the emails in your Gmail account.
Oxidized - configuration backup software (IOS, JunOS) - silly attempt at rancid
MailStore - MailStore Home - A 100% free single-private-user desktop solution
RANCID - RANCID - Really Awesome New Cisco confIg Differ.
Got Your Back - Got Your Back (GYB) is a command line tool that backs up and restores your Gmail account.