Katsura Shareware

ProLevel

Paid

Mix audio with real-time stereo level meter and clip indicator.

Chromatic Tuner

Paid

Tune a guitar or any other musical instrument.

AudioTest

Paid

Generate audio test signals, AIFF files.

Strobe Tuner

Trial version

Tune your string instruments.

ProPhase

Paid

Display phase and level of stereo audio signals in real time.

Screenshot Helper

Free

Clears the screen for a clean screenshot.

Ocean Waves

Paid

Relax as you listen to an ocean waves simulation.

KS Strobe Tuner AU

Trial version

Turn your Mac into a 12-note chromatic scale strobe tuner.

Sirds

Paid

Create Single Image Random Dot Stereograms (SIRDS).

RealZoom Quartz

Paid

generate closeup images of LCD, CRT or paper

SoundFrames

Paid

worksheets for syncing audio tracks & animation

RealZoom

Paid

Generate closeup images of LCD, CRT or paper.

Piano Tuner

Trial version

Tune your piano.

KS Chromatic Tuner AU

Trial version

Tune your guitar, bass, and other musical instruments.