Isadora 2 is supported on MacOS 10.10.x (Yosemite), 10.11.x (El Capitan), 10.12.x (Sierra)*, and 10.13.x (High Sierra)

Isadora 2 is not supported on MacOS 10.14.x (Mojave) and macOS 10.15 (Catalina).

2GB RAM mininum, 4GB or greater recommended

2.0 GHz i5 Processor minimum

*If you are using macOS Sierra, make sure to use 10.12.3 or later. There were problems with previously releases of Sierra that caused slowdowns in Isadora, but the new release seems to have solved the problem


Isadora 2 is only supported on Windows 10

Isadora is not supported on any other versions of Windows (8, 7, Vista, XP, 2000, MS-DOS, etc.)

2GB RAM mininum, 4GB or greater recommended

2.0 GHz i5 Processor minimum

Apple's QuickTime 7.6 or greater **

** QuickTime has been deprecated by Apple. If you are using Isadora 2, you will need QuickTime for Windows. You can get it here from Apple on this page:

Isadora 3 does not use or require Quicktime.

Sassafras Keyserver

Isadora requires Sassafras Keyserver v7.0 or later if you wish to use Sassafras Keyserver to manage your Isadora licenses.

Unsupported Hardware Platforms

Isadora is not supported on tablet devices such as the Microsoft Surface Pro, Linux machines, and systems which run macOS on non-Apple hardware.

Isadora is not designed for use with external graphics cards (eGPUs) or machines that have multiple discrete GPUs. 

Running Isadora on machines utilizing unsupported hardware configurations may have unexpected and undesirable results in terms of performance and usability.