RadonSoft

RTA Pro Analyzer

Paid

Portable, high-resolution spectrum analysis for on-site audio diagnostics

RTA Audio Analyzer

Free

RTA Audio Analyzer: A Comprehensive Sound Analysis Tool

SpectralPro Analyzer

Paid

Comprehensive Analysis with SpectralPro Analyzer

Noise and Sweep Generator

Free

Generate High-Quality Audio Test Files Easily

Spectral Audio Analyzer

Free

Spectral Audio Analyzer: Visualize Audio Frequencies