No specific info about version 2.6. Please visit the main page of TreeSize on Mac Informer.
Family Tree Builder is a popular family history application.
Precious Disk scans your Mac and cleans it of large files.
Folder Size Catalog provides at-a-glance view of your folders and folder sizes so that you can easily check the distribution of your disk space.
Surveys ans records the space used by your data on your disks.
Tree Size is a simple application that allows you to monitor your folders size.