Monitorix is a free, open source, lightweight system monitoring tool
AIX, Linux, VMware, Nutanix, Oracle, RHV, Cloud performance monitoring
Identify sizes of memory modules installed on most UNIX-based systems
This is now also available here github.com/sharkcz/collectl.git
DSL for writing communication benchmarks
Performance monitoring and logging software for Linux and Windows.
it's like Rainmeter, but for CLI
An unofficial VMware® ESX/ESXi Manager for Linux
Total uptime command
Perl implementation of a SCAP benchmark tool
User-based CPU quota tool