Google Open Source - All of Googles open source projects under a single umbrella

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.

SmallDevTools - Handy developer tools with a delightful interface

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.

whatdevsneed - This is whatdevsneed.

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