ManageEngine Key Manager Plus is a comprehensive, web-based solution that offers centralized management and visibility over the SSL certificates and SSH keys across any organization and helps administrators accurately monitor and manage them. This application allows you to set customizable and recurring notifications that alert you when the validity of your SSL cert is about to expire. It prevents unauthorized access to privileged accounts by removing unwanted SSH keys from vulnerable endpoints. It also allows administrators to harden security policies by:Automatically rotating privileged SSH key pairs prevents misuse of keys, reduces security risks, meets compliance requirements and minimizes the operational burden on IT teams.
Source: https://thehackernews.com/2016/11/ssl-ssh-key-manager-plus.html