NCH Tone Generator - Tone Generator is an easy-to-use program that can be used as a sine wave generator, sound frequency generator or signal generator that can create audio test tones, sweeps or noise waveforms.
Features
Generate sine wave, square wave, triangular waveform, saw tooth waveform and impulse sound waves
White noise generator or pink noise generator
Sound generator supports frequencies from 1Hz to 22kHz
(subject to sound card output capabilities)
Simultaneous tone generation of up to 16 tones at once
Mono or separate stereo operation for dual tones or beats
Log or linear sweep tone generation
Play generated tones or save
Download: 
NCH.Tone.Generator.3.26.rar - 1.4 MB
NCH Tone Generator 3.26 Portable