Download of VolumeManager 1.9.4 for Mac was available from 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. VolumeManager for Mac lies within System Tools, more precisely System Optimization. The actual developer of this software for Mac is Plum Amazing Software LLC.
From the developer:
Volume Manager is a Mac OSX app used to organize, automate, and monitor the mounting of Windows (SMB) and Apple (AFP) volumes/shares/disks. Laptops can use this app to manually or automatically mount volumes at work and at home. Volume Manager can also be used to wake computers that are sleeping on an ethernet LAN.
You may want to check out more software for Mac, such as TrashMagic, Lilt or WebGrab-FF2, which might be similar to VolumeManager.