SKUDONET Open Source Load Balancer and Web Application Firewall
This is now also available here github.com/sharkcz/collectl.git
AIX, Linux, VMware, Nutanix, Oracle, RHV, Cloud performance monitoring
Identify sizes of memory modules installed on most UNIX-based systems
Performance monitoring and logging software for Linux and Windows.
An unofficial VMware® ESX/ESXi Manager for Linux
User-based CPU quota tool