libusbx is a library which provides generic access to USB devices. As a library, it is meant to facilitate the development of applications which communicate with USB hardware. Its main features are portability (a single cross-platform API for Linux, OS X, Windows, and *BSD), user-mode (no special privileges required), and USB version-agnosticism (all versions of the protocol supported, including USB 3.0).
Arkeia Free Version is a no-cost version of Arkeia Network Backup specifically for small networks. It allows an administrator to backup and restore files via a Web UI. This edition has the option to backup up to two machines to a 250 GB disk storage or tape drive. It allows you to backup Linux machines, Windows desktops, Mac desktops, FreeBSD servers, and more.
Inspired by dd5sum, ddsum includes the following features: support for md5, sha1, sha224, sha256, sha384 and sha512 (plus any additional digests provided by OpenSSL); the ability to read source data and write it out while computing a message digest; the ability to compute multiple message digests with one pass of the source data; and the ability to verify that a message digest matches the data you have.