dsSHA is described as 'SHA1 hash-calculator. The beauty of this is its simplicity, tiny size (7KB) and ease of use'. There are more than 25 alternatives to dsSHA for a variety of platforms, including Windows, Linux, BSD, PortableApps.com and Windows Explorer. The best alternative is HashCheck Shell Extension, which is both free and Open Source. Other great apps like dsSHA are Hashtab (Free Personal), OpenHashTab (Free, Open Source), RapidCRC Unicode (Free, Open Source) and HashMyFiles (Free).
HashTab provides OS extensions to calculate file hashes. HashTab supports many hash algorithms such as MD5, SHA1, SHA2, RipeMD, HAVAL and Whirlpool. Hashtab is supported as a Windows shell extension and a Mac Finder plugin.
Features: Support for 22 algorithms, see Algorithms High performance hash calculation Native Windows looks High DPI screen support Long path support* Multilingual (Consider contributing to translation!
RHash (Recursive Hasher) is a console utility for computing and verifying hash sums of files. It supports CRC32, MD4, MD5, SHA1, SHA256, SHA512, Tiger, DC++ TTH, BitTorrent BTIH, ED2K, AICH, GOST R 34.