CastleGuard 2.0.1 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application is an intellectual property of Oliver Krakora. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
CastleGuard shows you the capabilities of every single app and you decide whether you trust that application or not. Beside this, CastleGuard gives you additional information about the developer and about the application, which version the application has and if the app is running or not.