MD5 Com Component
The MD5 Com Component creates an RFC1321 compliant MD5 string from a string of text or file content, The MD5 algorithm takes as input a string of arbitrary length and produces as output a 128-bit "fingerprint" or "message digest" of the input string. ... It is conjectured that it is computationally infeasible to produce two messages having the same message digest, or to produce any message having a given prespecified target message digest. ... In essence, MD5 is a way to verify data integrity, and is much more reliable than checksum and many other commonly used methods.
http://www.traction-software.co.uk/downloads/md5.zip - 2Mb - Download

Directory Digest
Directory compare & integrity check tool. Unlike most directory compare tools, it is intended for use in cases, when two directories can not be directly compared.
http://freeweb.siol.net/druksp12/digest.zip - 306Kb - Download - Screenshot

Fomdigests
Grep the Fom e-mail list instead of receiving messages one by one. Fom is an automated e-mail list for discussing Foundations Of Mathematics. It is a closed and moderated list (see Stephen G. Simpson : What is Foundations of Mathematics ? for further details). ... Fom is also avalaible in digest format. ... It runs on Windows 95/98 or Windows NT. ... edu/pipermail/fom/ This program is an help to work with fom-digests groups of messages. ... No database is required. ... About Roger Apery - http://peccatte.
http://peccatte.karefil.com/software/ChercherFom/fom-lookup.zip - 2Mb - Download - Screenshot

zsDuplicateHunter Standard
zsDuplicateHunter Standard edition allows you to safely and easily find and remove duplicate files. Step by step instructions help you to eliminate the duplicate files that clutter your hard dirve and slow your computer down. Duplicates can be in a single folder, in multiple folders on one... You can group by any combination of name, size, checksum, and digest; Sort Groups by number of duplicates or by duplicate information (size, name, checksum, digest); Search within the results to find specific files; and Save and print reports of duplicate hunt results.
http://www.zizasoft.com/installs/zsDuplicateHunter_2_21.exe - 2Mb - Download - Screenshot

zsDuplicateHunter Professional
zsDuplicateHunter Professional is a powerful way to find duplicate files including music files, image files, text files, and binary files. Duplicates can be in a single folder, in multiple folders on one computer, on an entire computer, or on networked computers. ... You can group by any combination of name, size, checksum, and digest; Search for duplicate files within zip files; Sort Groups by number of duplicates or by duplicate information (size, name, checksum, digest); Search within the results to find specific files; and Save and print reports of duplicate hunt results.
http://www.zizasoft.com/installs/zsDuplicateHunter_Pro_2_21.exe - 2Mb - Download - Screenshot

Encoder Wizard ActiveX
Encoder Wizard is a collection of two ActiveX (ocx) controls, Encoder Wizard and Decoder Wizard. These two controls allow you to fully support the Base64, Quoted- Printable, UUEncode, yEnc, MD5,HMAC MD5, URL, SHA-1, and Binary 2 Hex encoding methods. ... MD5 is a message digest hash algorithm that is used for validation and verification of message integrity. ... SHA-1 is another highly secure message digest algorithm used by the United States Government. ... It is now a publicly open algorithm which uses a 160 bit or 20 byte digest.
http://www.seekfordsolutions.com/Products/files/IPWizardToolpackv3.exe - 5Mb - Download - Screenshot

JSummer java
JSummer is a tool to compute and check MD5, SHA-160 and SHA-256 message digest. Console-Version and GUI. Implemented in Java.
http://zero-sys.net/portal/download/JSummer-0.0.5.1-java.msi - 3Mb - Download - Screenshot

JSummer native
JSummer is a tool to compute and check MD5, SHA-160 and SHA-256 message digest. Console-Version and GUI. Implemented in Java - but runs without a java-vm!
http://zero-sys.net/portal/download/JSummer-0.0.5.1-native.msi - 6Mb - Download - Screenshot

Arpoon Checksum
Arpoon Checksum compute checksums of files. A checksum (message digest, hash value) is a kind of fingerprint that permit to identify a file or document uniquely. This can be used to authenticate files or to follow changes on your documents.
http://www.arpoon.de/downloads/checksum_1_5_0.zip - 343Kb - Download - Screenshot

zsDuplicateHunter Enterprise Edition
zsDuplicateHunter Enterpirse is a powerful way to find and remove duplicate files. You can search music files, image files, text files, and binary files for duplicates. You can also search a single folder, multiple folders on one computer, an entire computer, or networked computers. ... You can also use a binary check in addition to the checksum or digest grouping methods to guarrantee that files are true duplicates. ... And, deleting duplicate files is as safe as possible because zsDuplicateHunter allows you to delete files to a temporary directory and by shows you warning messages before...
http://www.zizasoft.com/installs/zsDuplicateHunterEnt_windows_2_30.exe - 5Mb - Download - Screenshot