DarkWave Studio is a free Digital Audio Workstation (DAW) / modular virtual music studio for Windows. You can easily use the built in sequencer, bundled DarkPlug machines and third-party VST effects and VSTi instruments to create music.
AntiAlias VST works by oversampling it's stereo input between a minimum of 2x and a maximum of 32x. After oversampling an FIR filter cuts out all harmonics over the Nyquist, and then it's downsampled again, producing a bandlimited signal.