The 4.0.0 version of JArchitect for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
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. This software for Mac OS X was originally produced by CoderGears. The software lies within Developer Tools, more precisely DB Tools.
From the developer:
JArchitect simplifies managing a complex Java code base. You can analyze code structure, specify design rules, do effective code reviews and master evolution by comparing different versions of the code. With this app, software quality can be measured using Code Metrics, visualized using Graphs and Treemaps, and enforced using standard and custom Rules.
You may want to check out more software for Mac, such as OpdiTracker, Witango 6 or WitangoStudio, which might be related to JArchitect.