analyzer pro

System Information & Diagnostics Utility for Windows. Freeware.

Free Real-time FFT frequency spectrum analyzer plugin.

DiskSavvy is a free, fast and easy-to-use disk space analyzer utility.

Open-source disk usage analyzer.

Best data analyzer, 2D/3D-plotting, calc and presentation program.

MTuner is a simple audio frequency analyzer for tuning guitars and others.

Powerful web server log analyzer

Runscanner : a freeware malware and junk analyzer for windows

A simple frequency generator and analyzer.

MAnalyzer is a FFT based analyzer for audio frequency content.