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Merlin Project 3 and 4


Merlin Project 3 and 4 will no longer be developed any further. You can download the latest version here:


Copy the app into your Applications folder and start it from there.

macOS Catalina: Install and update fails because this version is not notarized by Apple"Merlin Project 4" can't be opened because Apple cannot check it for malicious software. Download a fresh copy from our website, perform a right-click onto the app, select 'Open', and confirm by clicking onto 'Open'.


Version 3 was replaced in 2016 by Merlin Project 4, both use the same license.

The license is a small file, not a license number or login to a license database. You can have your license file sent to you at any time. Simply use our online query.

Merlin Project creates a folder on your Mac for your user, where you can find the installed license:

  • Merlin Project 3: ~/Library Application Support/Merlin Project
  • Merlin Project 4: ~/Library/Containers/net.projectwizards.merlinproject/Data/Library/Application\ Support/net.projectwizards.merlinproject

Operating Systems

The versions are supported from the following operating systems:

  • Merlin Project 3: OS X 10.9.5 (Mavericks) or higher
  • Merlin Project 4: OS X 10.10.5 (Yosemite) or higher


The Merlin Project Magic on the Mac and iPad

Gantt Chart, Kanban and Mindmap on Mac and iPad. Try now for 30 days for free.