Helio Workstation is a free arpeggiator Stand Alone plugin developed by Peter Rudenko. Compatible OS(s): Windows, macOS.
Helio is a lightweight free music sequencer for OS X, Linux, Windows, iOS and Android.
Aimed to be a perfect sketching tool, Helio features high-performance core, linear-based sequencer with clean interface, integrated version control providing intelligent synchronization between devices, saved undo history, translations to many languages and more.
And it’s free and open-source.
{See video at top of page}
https://www.youtube.com/watch?v=-wDp6rpRXks
https://www.youtube.com/watch?v=t7yEOJAQRdM
http://freemusicarchive.org/music/Peter_Rudenko