Read-Only Apple File-System Support Is Being Worked On For The Linux Kernel (APFS)

[starshipeleven]

Windows + APFS driver?

Mac with dual boot Windows/MacOS is probably the safest way

[uid313]

Paying for 2 USB drives to keep 2 OSes is many orders of magnitude cheaper and 100% guaranteed to work than any kind of filesystem driver development, seriously wtf are you thinking. THey are not going to be coding in C# or java where you can whip up some crappy hack in 10 minutes.

You might not want to run the OS off a USB drive or mount the file systems off a real OS. You might want to mount it under virtualization.
Also they might want to use one system in order to only have to pay for one license, not have to learn multiple OS, or because desire to use one disk cloning tool instead of different ones on different platforms, unless there is a cross-platform one.

File systems are written in C, not C# or Java.

[starshipeleven]

You might not want to run the OS off a USB drive or mount the file systems off a real OS. You might want to mount it under virtualization.

A Virtual Machine or an OS booting from USB is still a real OS.
Linux is a real OS so making a Linux driver would still mean that you are mounting it with a real OS.

Also they might want to use one system in order to only have to pay for one license,

Windows volume licenses cost near-nothing, MacOS is gratis, Linux and BSD are free and gratis.

not have to learn multiple OS,

Learning how to launch some application under 3 different OSes is well within the reach and pay grade of engineers working as forensic IT specialist at FBI.

or because desire to use one disk cloning tool instead of different ones on different platforms, unless there is a cross-platform one.

Disk cloning tools don't need to be filesystem-aware. In forensic jobs you don't want disk cloning tools to be filesystem-aware as you don't want to have another thing that can mess with the filesystem.

File systems are written in C, not C# or Java.

That's what I said. "THey are not going to be coding in C# or java where you can whip up some crappy hack in 10 minutes."