Ext2/3/4 Filesystem Utilities is described as 'E2fsprogs (sometimes called the e2fs programs) is a set of utilities for maintaining the ext2, ext3 and ext4 file systems' and is an app in the OS & Utilities category. There are three alternatives to Ext2/3/4 Filesystem Utilities for Linux, Mac and Windows. The best alternative is BeeGFS, which is free. Other great apps like Ext2/3/4 Filesystem Utilities are XtreemFS (Free, Open Source) and Lustre (Free, Open Source).
XtreemFS is an object-based, distributed file system for wide area networks. The file system replicates objects for fault tolerance and caches metadata and data to improve performance over high-latency links. SSL and X.