alphakanal have released Buzzer2, a free, Polyphonic Stereo, "analog" synth, AudioUnit, which is the final release of buzZer. It's basically buzZer with a feature updated DSP engine and a new user friendly GUI. buzZer and Buzzer2 can be used together in one host application.

New in Buzzer2:

• OSC glide.
• OSC phase sync.
• LFO key Track.
• EFX spatial effects size.
• EFX BPM sync.
• Pitch bend amount.

Features of Buzzer2:

• Subtractive synthesis.
• 2 morphable sine, triangle, sawtooth , square and noise VCOs.
• 2 independent high-, low-, band-, peak- and vowel-filter.
• 4 LFOs with synchronization to host tempo.
• 3 ADSRs.
• Poly-, unison and legato-mode.
• Wave shaping distortion.
• Modulated spatial effect.
• Random generation of sounds.
• MIDI learn.