Some minor details worth mentioning (also related to your (@KoenT) question).
- REAPER has a great API that can acheive many things ARA does. but… It’s only on REAPER.
- ARA is currently at ARA2. they are backward compatible IIUC but the following logic applies:
- a plug-in can be only ARA2 while not support ARA1.
- a host can be ARA1 meaning it won’t support ARA2.
- ARA2 is an extension on standard plug-in formats.
- it support VST3 and AU
- (ARA1 did support VST2, again if I remember correctly).
Hosts supporting ARA:
While focused on Melodyne, this page provides details about ARA compatibility with hosts.
https://www.celemony.com/en/melodyne/editions-and-technical-matters
- Studio One 4 (ARA2/1), Studio One 3/2.5 (ARA1)
- Logic X 10.4.3 (ARA2)
- REAPER 5.97 (ARA2)
- Cubase 10, Nuendo 10 (ARA2) - announced ARA2 support. no public release yet.
- Tracktion Waveform (ARA1) - no official announce about ARA2.
- Cakewalk/Bandlab SONAR (ARA1) - no official announce about ARA2.
- MAGIX Sanplitude (ARA1) - no official announce about ARA2.
- Acoustica Mixcraft (ARA1) - announced ARA2 support here.