AWS Elastic Load Balancing - Amazon ELB automatically distributes incoming application traffic across multiple Amazon EC2 instances in the cloud.
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.
Haproxy - Reliable, High Performance TCP/HTTP Load Balancer
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.
nginx - A high performance free open source web server powering busiest sites on the Internet.
RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems