PerfView is a CPU and memory performance-analysis tool
Macro(s) for vectorizing loops
DPDK based 100Gbps network performance and load testing software
A go-style coroutine library in C++11 and more
Precision CPU stress testing and benchmarking
Free stress test tool for your PC
Clinic.js diagnoses your Node.js performance issues
MAX StressTester: Python stress testing tool for max CPU, RAM and Disk
This is now also available here github.com/sharkcz/collectl.git
Command line interface for testing internet bandwidth using speedtest
Real-time analysis and diagnostics tools for OpenResty
Scriptable database and system performance benchmark
Command Line profiler of CPU usage
An online request replication tool, also a tcp stream replay tool
Slows down any given Windows process (written in C#)
A bash-Script to collect metrics from a Linux system.
A benchmark to test your CPU, RAM, and system
Java based CPU stress testing tool
Increase your android performance
Library tools to collect timing in Java, C, C++
SarBox helps user to parse or analyze sar data