Mask Pro 5.0 for Mac can be downloaded from our website for free. The application relates to Developer Tools. The actual developer of this software for Mac is onOne Software.
From the developer:
Using advanced color matching and decontamination technology, Mask Pro 3 allows you to create flawless, real-life masks from any image. An upgraded feature set offers better control over edge transparency and background color spill.
You may want to check out more Mac applications, such as Perfect Mask 5.2, RiffMaster Pro or Sequel Pro, which might be related to Mask Pro.