Originally loosely based on the vmfs code from fluidOps, this set of tools has since evolved to handle more features from VMFS, such as extents, and allows to access VMFS through the standard Linux VFS with the help of the FUSE framework. vmfs-tools is free software/open source, distributed under the terms of the GNU General Public License version 2 or any later version. A vmfs-tools package is available in Debian and Ubuntu. It is also known to be used in Clonezilla.
I'm currently testing a version at https://git.fs.lmu.de/roots/fslmude-repository/tree/master/sys-fs/vmfs-tools and add it to tree if it works for us.