REW - REW is free room acoustics analysis software for measuring and analysing room and loudspeaker...

Dirac Live® for Studio - Dirac Live for Studio is a set of audio plugins that performs sound measurement and calibration. In addition to the standard frequency calibration, it also does timing (as to time align) and does not require special Dirac compatible hardware.

AUDio MEasurement System - multi-platfrom system for audio measurement through sound card in the PC.

QSpeakers - QSpeakers is a DIY speakers design software. This program simulates common acoustical enclosures behaviour in the mean to help users to design their own loudspeaker systems.

Open Sound Meter - Could work as a standalone universal audio engineering measurement solution and as a remote wireless control and monitoring for desktop instances.

MAPP 3D - A powerful, multipurpose sound system design tool that delivers precise, high-resolution predictions of sound energy distribution in a three-dimensional sound field.