Paragon ExtFS is a software application developed by Paragon Software Group. It is designed to provide full access to ExtFS and Ext4 file systems in Microsoft Windows. ExtFS stands for Extended File System, and it is a journaling file system used by Linux and some other operating systems. With Paragon ExtFS, users can easily access, modify, and backup files stored on ExtFS-formatted storage media. It also enables users to mount ExtFS volumes within the Windows environment and make them visible to Windows applications. Paragon ExtFS also features a powerful toolset for managing ExtFS partitions, including support for creating, resizing, formatting, and deleting partitions. Additionally, it can also be used to perform data recovery operations on ExtFS volumes.
HFSExplorer is for Mac formatted hard disks, it does not work with Ext.
Ext2Fsd
DiskInternals Linux Reader
Ext2Read (Ext2Explore)
Ext2 Installable File System
HFSExplorer
Discontinued development terminated. The latest version, 2.2, was released in 2010. It can still be downloaded from SourceForge