Free MIDI Arpeggiator VST/AU Plugins!


I needed an arpeggiator plugin for a work in progress music project yesterday, so I browsed the web to see which tools the freeware VST plugin world has to offer. As a result of that search here’s another BPB Freeware Studio article featuring the best freeware arpeggiator VST/AU plugins for Windows and Mac.

Arpeggiators can be an awful lot of fun, especially if you produce electronic music. You can use them to trigger your virtual synthesizers and come up with exciting new bassline and lead sequence ideas without actually playing a keyboard. Don’t limit yourself to synthesizers, though. Try triggering a sampler or a drum machine with an arpeggiator, as this could lead to surprisingly good results on occasion.

Also see: Free Step Sequencer VST Plugins

Free Arpeggiator VST Plugins

The plugins below are listed in alphabetic order. Follow the links for screenshots and more info about each listed plugin:

Special thanks to Numanoid for helping us refresh the list!

Do you think that a certain plugin is missing from this list? You’re welcome to leave your suggestions in the comments section below!

Kirnu by Arto Vaarala

Arto Vaarala’s brilliant Kirnu seems to be everyone’s favorite free arpeggiator VST plugin at the moment. Featuring everything you may need from a MIDI arpeggiator and then some, this thing rocks once you get the hang of it.

Kirnu by Arto Vaarala.

Kirnu by Arto Vaarala.

Even though an improved and more advanced version of the plugin called Cream has been released in the meanwhile, the good old Kirnu still remains a solid choice for anyone looking for a workhorse freeware arpeggiator. Dancing on a thin line between an arpeggiator and a step sequencer, this plugin pretty much provides all the features an advanced user would need from a plugin of this type.

Kirnu may be a bit too hard to grasp at first, but programming this plugin should become a breeze after you watch any of the tutorial videos available online. Keep in mind that you’ll need a VST host application capable of handling plugins with MIDI output. For a quick starter, you can grab this free set of 25 presets for Kirnu provided by satYatunes.

BlueARP by Oleg Mikheev

Released in 2012, the amazing BlueARP was instantly recognized as a solid contender to Kirnu in terms of features and functionality. Developed as a powerful arpeggiator with a unique pattern sequencer workflow, this freeware plugin should definitely be on your download list.

BlueARP by Oleg Mikheev.

BlueARP by Oleg Mikheev.

The developer describes BlueArp as a “pattern arpeggiator”, “step sequencer style arpeggiator” and an “arpeggiator with pattern input”. The bottom line is that this plugin can offer much more than a standard arpeggiator, borrowing some of its functionality from popular hardware groovebox instruments such as the Korg Electribe and Novation Nova’s arpeggiator.

In my opinion, this plugin is more intuitive and easier to program than Kirnu, however this probably varies from user to user. The official download page for BlueARP provides a handy set of video tutorials which are definitely a recommended watch before using this feature packed plugin for the first time.

Final Words

Thanks for reading! As always, you’re welcome to leave your own suggestions in the comments section below. Also, please consider sharing this article if you find it informative! Have fun with the freeware arpeggiators listed above and make some great music!

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About Author

Tomislav is a musician and a blogger. He writes about free and affordable music production tools on a daily basis here at Bedroom Producers Blog.


    • bedroom producers blog on

      yeah, Kirnu is exceptionally good! although i also like having a few simpler plugins laying around – they come in handy in situations when i need to just set something up quickly. WOK’s SimpArp is great for that.

  1. Hey guys, why does the article mention AU plugins? I cannot see AUs anywhere, except I am missing something ;-) The links only redirect to Mac VST plugins.

      • Thank you very much for the hint. I was look at their readme and it stated VST, so I did not continue to read on. AU is very well hidden :) Again a big thanks for pointing me towards it – really appreciated!

        • bedroom producers blog on

          glad i could help! i really don’t know much abot Mac tools (never used a Mac in my life), but i do try cover that stuff too as often as possibe – although i have any first-hand experience with those plugins, so i have to rely on other sources of information like the brilliant KVR for example.

  2. Thanks – great article. I’m looking for something that will let me quickly and easily mimic 80’s arpeggio sounds like “Rio” in live performance – do any of these plug-ins have presets that let you do that without hours of tweaking?

  3. Just curious if there is any application out there, free or otherwise, that you can load it up and use the sounds from another source machine, like opening up Kontakt 5, loading in Retro Machines II then opening the arpeggiator and the arp using the sounds from MKII? Not something that is an arp and has its own sounds, but can turn anything else into an arpeggiation?

    • Hey Thomas,

      Kirvu is exactly what you’ve described. It doesnt have its own sounds – it actually outputs midi notes through a port# which you configures, and then you feed it to a VSTi of your choice using the same midi port.

  4. So I installed the OSX Kirnu and I can only open the plugin as an instrument. How can I use it as an audio unit/effect? By the way my DAW is Logic.

    Any advice/help is appreciated. Thanks

    • Or is there a way to route a synth/instrument to Kirnu while still opening Kirnu as an instrument instead of an audio unit?

  5. Hi all,
    I downloaded Kirnu last night. It’s awesome.
    After watching the videos on Kirnu’s website I found that you do in fact use kirnu as a Virtual Instrument. No, it does not generate sounds but does output midi. Load Kirnu as an instrument, route your midi input to Kirnu. Load the Virtual Instrument you want to control from Kirnu. Route Kirnu’s midi output to the Virtual Instruments midi input and rock on. Hope this helps someone.

  6. Where the hell does it say Kirnu is free? I just checked the website and unless I want the demo it’s 35 Euros >< is there another version out there that's free?

  7. There is now a beta version of BlueARP available for MAC and it is working well for me. There are not many free Arpeggiators for MAC users so it might be worth mentioning ARPG8R which is free to download and at $12 won’t break the bank.

  8. Hi

    Just letting you guys know that a version of Kirnu Cream is available with the latest Computer Music magazine (#210). I don’t know if it’s the same as the full Cream or a special cut down version. I might have to get it and see :)

    Mr T.

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