The ext3 or third extended filesystem is a journaled file system that is commonly used by the Linux kernel. It is the default file system for many popular Linux distributions.
The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.
It was born as a series of backward compatible extensions to remove 64-bit storage limits and add other performance improvements to ext3.However, other Linux kernel developers opposed accepting extensions to ext3 for stability reasons and proposed to fork the source code of ext3, rename it as ext4, and do all the development there, without affecting the current ext3 users
Ext2Read is an explorer like utility to explore ext2/ext3/ext4 files. It now supports LVM2 and EXT4 extents. It can be used to view and copy files and folders. It can recursively copy entire folders. It can also be used to view and copy disk and file
You can download Ext2Read from here
Ext2Fsd is an ext2 file system driver for Windows 2000, XP, Vista. It’s a free software and everyone can distribute and modify it under GPL2.
Procedure o follow
Important Note:- When creating/formatting the ext4 filesystem, make sure to add “-O ^extent” which means disabling the “extent” feature bit. The following steps will not work if your ext4 filesystem still has “extent” feature enabled. ext2 and ext3 partitions should be fine.
First Download ext2fsd from here
Right-click the downloaded file and click Properties. Set the compatibility mode to “Windows Vista Service Pack 2? and check “Run as administrator”.
Run the ext2fsd installer. During install, we recommend you uncheck the “enable write access” feature to safeguard against losing data in your Linux partitions.
Restart your Windows 7 PC and run the Ext2 Volume Manager from Start Menu.
Important Note:- Use these tools with your own risk if you don't use them properly it will remove your linux partition data
If you have any other tools to do this you share with us.