MakeUseOf posted a review on Paragon NTFS for Mac OS X

One of the drawbacks when switching from Windows to Mac is the lack of native NTFS support. You can read from NTFS volumes with no problems, but writing is another story. If your drives use an OS X-friendly filesystem like HFS+ or FAT then you won’t have a problem, but if you’ve got a rather chunky external drive formatted to NTFS (like I have) then you’re a bit stuck.

Luckily software like Paragon NTFS for Mac OS X exists to restore the missing link and make your NTFS volumes useful again. The software costs $19.95, has already been updated with full support for Mountain Lion (OS X 10.8).

  Paragon NTFS For Mac OS X Review