Experience total communication between Mac & Windows with the industry’s highest performing file system technology

Paragon HFS+ for Windows is the only solution that provides full read-write access to HFS+/HFSX partitions on any type of disks (GPT, MBR) under most of Windows versions!
Access Mac-formatted partitions in Windows systems with the fastest and most stable HFS driver on the market.

http://www.paragon-software.com/home/hfs-windows/

Using a Mac® is a wonderful experience – until you try to use a NTFS-formatted drive, which includes most Windows® hard drives! Because in order to create, delete or modify any files on Windows NTFS drives you need Paragon NTFS for Mac® - after minutes you won’t remember there ever was a problem. Remove the barriers between NTFS and HFS+ with ease and confidence!

The first solution to support OS X 10.8 Mountain Lion!

http://www.paragon-software.com/home/ntfs-mac/