Virtual Oscilloscopes

https://academo.org/demos/virtual-oscilloscope/

Adobe Soundbooth CS5

• http://www.adobe.com/products/soundbooth/

Analysis and Fourier Analysis

• http://audacity.sourceforge.net/download
• http://audiokit.io/
• https://wildtech.mongabay.com/2016/01/ibats-emerging-tools-for-acoustic-surveys-and-species-identification/
• http://www.mjtruiz.com/ped/fourier/
• Sound Analyzer by John Welch

Cool Edit Pro

• http://www.softpedia.com/get/Multimedia/Audio/Audio-Editors-Recorders/Cool-Edit-Pro.shtml

Falstad

• http://www.falstad.com/fourier/

Frequency Analyzer

• http://spek.cc/

Online Tone Generator

• http://www.onlinetonegenerator.com

PhET Fourier sim

• https://phet.colorado.edu/en/simulation/fourier

Raven Lite 1.0

• http://www.birds.cornell.edu/brp/raven/ravenversions.html

Seventh String Tuner

• http://www.seventhstring.com/tuner/tuner.html

Seventh String Tuning Fork

• https://seventhstring.com/tuningfork/tuningfork.html

Data AcQuisition And Real-Time Analysis

• http://www.daqarta.com/