monstrumWaveXT 2.963 for Mac was free to download from our software library. The program lies within Audio & Video Tools, more precisely Music Production. The actual developer of this Mac application is Robert Wentz & Monstrum Media.
From the developer:
monstrumWaveXT is an editor for the Waldorf Microwave II/XT/XTk synthesizer. MonstrumWaveXT includes the ability to load waveforms from files (wav, aiff, mp3, ogg) into wavetables on the synth, and implementations of a few feature requests. It includes Waveform Shapers for additive and subtractive waveform synthesis.
You may want to check out more Mac applications, such as V-Synth Librarian, M-Audio Key Rig or Mandala Virtual Brain, which might be similar to monstrumWaveXT.