The 2.1.1 version of Maltego CaseFile for Mac is provided as a free download on our website. The application is included in Business Tools. The actual developer of this free Mac application is Paterva.
From the developer:
CaseFile is the younger brother to Maltego.
You may want to check out more software for Mac, such as Mystery Case Files - Return To Ravenhearst, Mystery Case Files - Dire Grove or Mystery Case Files: Prime Suspects, which might be related to Maltego CaseFile.