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 Atom by Muon Software is a Virtual Instrument Audio Plugin. It functions as a VST Plugin.
Product Atom
Developer Muon Software
Price (MSRP)
No Longer Available
Type / Tags Synth (Analogue / Subtractive)
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
N/A - Not Released
Miscellaneous Information
Copy ProtectionNone

Atom is the original freeware VST instrument.


  • 2 Oscillators.
  • Resonant LPF.
  • PWM.
  • 64 bit audio engine.

NOTE: Atom has no GUI - it uses the host application's default interface.

Latest User Reviews Average user rating of 3.00 from 1 review

Reviewed By maz22
August 25, 2003

This simple little plug in can really be a workhorse if you allow it. when I'm just starting a track I will usually start with this. It's just so easy to work with. The sound can be very limiting so you have to know when and where to use it. It's good for basses and leads of course, but use it with effects or layer it with a more substanicial vst and there is when you see it's value. The filter, as with all Muon products is very nice. The sound really cuts through in the mix, which is why it's good for layering. It's very stable and the cpu usage is the lowest I've seen. Like I said, it's always in my rack.Read more


Discussion: Active
11 June 2019 at 11:26am

You can still get this classic freeware plugin dating back to 1999 over at Wayback Machine. The main difference between the 'Pro' version and this one, is that the Pro has 12 note polyphony and supports pitch bend and mod wheel. The free version has 8 note polyphony and does not support those MIDI features.

Not a bad synth, but super limited. No pitch bend or LFO means something like vibrato wouldn't be possible, nor pitch slides. But it's oscillators and filter are way better than on Neon for example. And all parameters are open to automation. Good for old school sounds.

11 June 2019 at 2:42pm

Seems to have an issue though: the pulse width affects the DC offset of the signal, which could be a problem in some cases.

The WASP soft synth which came out 2000 for Orion Pro (then later licensed for Fruity Loops 3.0) had a much better pulse oscillator in comparison.

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Average user rating of 3.00 from 1 review

Muon Software
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