Accessing Linux Partitions In Windows

Lately I've been booting back and forth between Ubuntu and Windows. This time, I installed Ubuntu on a separate partition, instead of using Wubi. However, Ubuntu's default filesystem is EXT3, which is not accessible through Windows.

With the help of 3rd party software, you can. There are many out there, but so far these two works for me.

ext2explore

ext2explore is a standalone program, requiring no installation. Good for occasional use. It will automatically detect your EXT2/3/4 partitions, and can extract files from that partition. However, it's read-only, so you can't copy files into that partition with this program. Very simple to use. You can download it here:
http://sourceforge.net/projects/ext2read/

ext2fsd

ext2fsd allows EXT2/3/4 support from within Windows, but like ext2explore, it's read-only. Trying to modify or create files from EXT partitions will generate an error. Still, it works seamlessly, you can copy your files, or open the files in another software without extracting them out. You can download it here:
http://sourceforge.net/projects/ext2fsd/