SpamAssassin - Use this program to "Unspam" your mailbox(es).

Netumo - Ensure healthy website performance, uptime, and free from vulnerabilities. Automatic checks for SSL Certificates, domains and monitor issues with your websites all from one console and get instant notifications on any issues.

MailScanner - MailScanner is a open source email security system design for Linux-based email gateways.

AppZero - AppZero is a monitoring and migration tool that allows users to keep track of different applications and servers in both simple and complex IT environments.

Rspamd - Rspamd is an advanced spam filtering system that allows evaluation of messages by a number of rules...

RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems