CRC32 COM Component
CRC32 COM Component is for ASP, . NET, Cold Fusion, VB, VC++ and other languages. The com component will quickly generate a CRC32 checksum from files or a text string in hex or numeric as the official polynomial used by CRC-32 in PKZip, WinZip and Ethernet.
http://www.traction-software.co.uk/downloads/CRC32Com.zip - 1Mb - Download

CRC32 Static Library
CRC32 Static Library for Microsoft VC++ was produced to make your CRC checking operations quick & easy to implement seamlessly without the need for an external DLL The CRC is a "digital fingerprint" of a file, With CRC32 you can "melt down" a huge 20 MB (or even much bigger) file to have a... Though you can use CRC32 to calculate 32-bit checksums of any file the real strength and usefulness of CRC32 is in comparing Wave Sound Files to see if their non-silent music parts are identical. ... That’s another fine thing about CRC32 - it calculates compatible, widely used 32-bit checksums, not...
http://home.freeuk.net/traction/CRC32LibrayTRIAL.zip - 1Mb - Download

RSP GZip Compressor OCX
ActiveX OCX to compress files very fast in the standard gzip format What is new in the version 1. 5. 0 (24/Dec/2004 15:20) : Replaced the Zlib compression method from 1. 1. 4 to 1. 2. 1 ( the latest available ) , minor modifications to make the control more reliable , added a function to... clic3. ... net/rspgzip. ... htm , minor bugs fixed What is new in the version 1. ... 4.
http://rspsoftware.bighost.com.br/rsgzs162.zip - 118Kb - Download - Screenshot

Sentinel
Sentinel works by analyzing exploits in both your Registry and your system folders; integrating with ANY Anti-Virus program to quarantine these threats. Sentinel's Integrity Checker will notify your anti-virus/trojan application(s) if any file has been modified or added in any way whatsoever... Three new algorithms added since initial release (SHA-1, MD4 and MD5 on top of the CRC32 algorithm). ... Sentinel's RegWatch will watch over your startup registry entries, as well as other commonly exploited tactics viruses use to load--if any file seems suspicious, it is audited.
http://www.runtimeware.com/Sentinel2.zip - 2Mb - Download - Screenshot

Advanced CheckSum Verifier
Comprehensive SFV and MD5 checksum utility for Windows 95/98/Me/NT/2000/XP/2003. The handy and fast utility for protecting the integrity of files by using the CRC32 or MD5 checksum calculation algorithms. It will allow you to verify the accuracy of your data after you burn a CD or transfer a... Uses checksum files fully compatible with popular md5sum utility for MD5 and SFV (Simple File Verification) for CRC32. ... And it's extremely fast and lightweight. ... This program is especially effective if you have many files, many subdirectories, or both.
http://www.irnis.net/files/acsvi.exe - 349Kb - Download - Screenshot

RSP Checksum OCX
This ActiveX OCX can compute very fast the checksum of strings or files using Adler32 , CRC32 , MD5 , SHA-1 and SHA-256 , the code is optimized for new AMD and Intel processors running very fast in...
http://rspsoftware.bighost.com.br/rcks260.zip - 366Kb - Download - Screenshot

Readfile
Readfile utility calculate CRC32, Adler32, MD5 and SHA1 of fille. It allows you to test the speed of memory copy and disk transfer operations under Windows 95 and Windows NT. This is a Win32 console application. C Source included.
http://www.winimage.com/readfi16.zip - 484Kb - Download

You need it
You need it! is a very useful comprehensive Business and Utility software suite which you can HARDLY find anywhere. It consists of 15 modules: AutoStart, AutoShut, MeasureMe, PadPlus, Find in Files, Files/Directories Compare, Add/Remove Line Numbers, Remove Blank Lines, C/C++ Source code... More precise result and less time consumption - Find in Files, Files/Directories Compare 8. ... 7. ... Free Upgrade for life! ... Do you want to protect your business secrets? ... Compare any Files or Directories 6.
http://www.jummfa.com/download/youneed.zip - 4Mb - Download - Screenshot

Command Line SFV Checker
Generate or check the CRC32 of the files list present on the given '. SFV' file. It is very useful in case you must execute a fast CRC32 check of a set of files and you don't have the Windows graphic interface (for example if you administrat e a remote PC using a telnet shell). ... r?? ... *hiv*. ... zip (Build SFV of all the matching files in the specified pattern inside cur dir) Enfis_SFV. ... rar itz*. ... exe -r -p="c:\Program files\" -f="Check file. ... exe -f=check. ... Both - and / are allowed like option parameters.
http://www.enfis.it/transfer.php?id=2&type=binary&ext=.zip - 36Kb - 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