AboutQFileHasher is an application to calculate and verify checksums (hashes) of multiple files with wizard-like GUI. It supports 12 hashing algorithms: CRC32,MD2, MD4, MD5, SHA1, SHA2 (224,256,384,512)-bit, RIPEMD (128,160,256,320)-bit,Whirlpool, ED2K, AICH, Tiger, TTH. Taking into account modifications of SHA2 and RIPEMD total number of supported algorithms is 18. Also, QFileHasher supports a number encodings for text representation of checksums: Base16 (hexadecimal), Base32, Base32hex, Base64, Base64url. QFileHasher allows processing of nested directories and provides a number of ways to update existing checksum files: Brief, Deep, Complete, delta-Deep anddelta-Complete. Difference between updating modes is described by followingmatrix:Search for new files:              Deep, Complete, delta-Deep, delta-CompleteSearch for new directories:              Complete,             delta-CompleteProcess listed files:       Brief, Deep, Complete,Process only new files:                            delta-Deep, delta-CompleteAll files assumed to be UTF-8 encoded by default, but support for 8-bitencondings is also included.For any questions, problems or suggestions, bugs and patches,please contact Mirai Computing at "mirai.computing@gmail.com".Legal infoLicense for QFileHasher and Qt libraries is the GPL v3.0 (see COPYING).3rd party files, "libtomcrypt" library and "Tango" icon theme by Tango Desktop Project are Public Domain.Source code of QFileHasher is available from project site (http://sourceforge.net/projects/qfilehasher/) and Qt SDK source codecan be obtained from QtSoftware (http://qt.nokia.com/).