1)   Making Waves 1.0b2
Making Waves is an interactive physics package that helps students visualize and understand the motion and interference of transverse and longitudinal waves.
amplitude, damping, frequency, interference, longitudinal, phase, pulse, superposition, transverse, wave,

 2)   Oscillations 1
Oscillations is a Virtual Laboratory of Waves, Oscillations, Harmonic Motion, and related themes. An Intuitively Easy-To-Use collection of -at least- 21 interactive simulation modules that allow the user to simulate and visualize experiments.
Physics, waves, oscillations, harmonic motion, pendulum, frequency, period, amplitude, SHM, energy,