sndpeek - a real-time audio visualization tool (animated, 3D)
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
Youlean Loudness Meter - Find your audio's true perceived loudness to prepare for TV and streaming services.
go-dsp-guitar - A cross-platform multichannel multi-effects processor for electric guitars and other instruments.
Digital Level Meter - Display sound level
Waves GTR - From Fender® to Marshall®, Mesa/Boogie® to Vox®, and more, Waves has captured...