Use this utility to verify Cyclic Redundancy Check numbers for disk files. Very handy when troubleshooting your own program. The C++ source code demonstrates a minimal implementation of the CRC-32 algorithm. Companion to the CRC Text Calculation (http://www.createwindow.com/programming/crc32/crctext.htm) program. Note: Click on the ClipTrak link at the bottom of this page for another free program and source code that makes extensive use of CRC-32.

WinMD5Free is a tiny utility to compute MD5 hash value for files. It works with Microsoft Windows 95, 98, Me, 2000, XP, 2003 and Vista.Features: Supports almost all Windows platforms including Microsoft Windows 95, 98, 2000, Me, XP, 2003 and Vista.Fast and multi-threaded. It can compute a 2 GB file less than 1 minute.Supports big files larger than 4 GB.Low resource usage. It uses less than 5 MB RAM.Don’t require .NET runtime installed. It is a standalone EXE file and the startup is speedy. There are MD5 tools for Windows on the market, but most of them requires .NET runtime and they may take a few seconds to start. This is also the reason I wrote the program.Supports “Drag & Drop”. You may either select a file, or drag and drop a file to the program window to get the MD5 hash value.Supports verification of original MD5 value and current MD5 value.Most important, it is FREE. No spyware or adware bundle.