
The possible reason may be due to its developer - Tuxera, the same maker of the well-known Tuxera NTFS for Mac. But for macOS, it's only compatible with macOS 10.12 Sierra and earlier. NTFS-3G is an open-source and cross-platform NTFS driver. Does free NTFS-3G support macOS Monterey/Big Sur? NTFS-3G is one of them and totally free, but NTFS-3G cannot run in macOS Monterey/Big Sur and cannot read NTFS drive on Mac and write to NTFS drives in macOS Monterey/Big Sur either.

Luckily, we have a handful of NTFS for Mac free software with which we can read and write NTFS without any hassles. For Apple Macs, however, it's only able to read NTFS drives, so you will find your Mac external hard drive read-only. The NTFS file system is the default file system of Windows.

Bonus tips to read-write to NTFS for free if NTFS-3G for macOS Monterey/Big Sur is unavailable Is there any NTFS-3G for macOS Monterey/Big Sur alternatives?

