The 0.8 version of DTreeJungle 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. The actual developer of this free software for Mac is Taq. The software lies within Education Tools, more precisely Teaching Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
DTreeJungle is a free and open source decision tree application. Decision Tree Jungle provides educational applets to teach the concepts of decision trees for regular pattern recognition. DTreeJungle is licensed and distributed under the terms of the Common Public License.
You may want to check out more software for Mac, such as PianoRoll, eduMap or FRS Money Math, which might be similar to DTreeJungle.