xls2mysql is a php application shipped with a simple but easy to understand interface : one tab enables file uploading, the other displays the list of all files in the recipient directory. As such you can try the process many times without re uploading your file.

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 small, handy reference to it, a single 32-bit number like 7d9c42fb (hexadecimal notation) which would unambiguously reflect the entire contents of this huge

Backup utility is a useful tool to simplify files and folders copying to the archives.
Backup Utility has build-in zip compression and easy access to archiving. You don't need any additional programs. But, if you prefer any external archiver, i.e. WinRar, you can use it too by setting one of program options.
Backup Utility operates the file lists. You can load, modify and save file list. Also program has AutoSave option..

[ASP] A program that allows backup and restore of files that span multiple floppy disks. It is not dependent upon the version of the DOS or Windows(tm) operating system. The floppy disks can already contain other files. The language of prompts and messages can be changed. The backup/restore process uses cyclic redundancy checks (CRC) to assure exact file integrity.

Recovery Toolbox for Zip was created to help users solve the zip recovery issues and always have control of their archived data. It recovers information from damaged zip files and minimizes data loss during the zip recovery process. One of the peculiarities of this application is the fact that it employs several heuristic algorithms and methods to repair zip file or recover information from damaged zip files.

ZipRecovery is a data recovery program for corrupted Zip archives (.ZIP). Supports all methods of ZIP compression. No special skills are required to use ZipRecovery. Simple user interface and full install/uninstall support make the program available to everyone. Available for all modern platforms: Windows 95/98/NT/2000/XP/2003 Server.

Kernel for ZIP - recover files from corrupted ZIP archives corrupted due to incomplete download, virus attacks or CRC errors. During repairing process a complete scan of the damaged ZIP file is performed to locate and extract the recoverable information. After the complete scanning the files which are recoverable are recovered and copied in the used defined location.

ZIP Recovery Toolbox repair ZIP files and extract files from a damaged ZIP and SFX files. Features:
Repair ZIP archives
Repair self-extracting (SFX) files
Recover password-protected ZIP files
Repair ZIP files larger than 4 GB
Restore ZIP files from damaged media
Check file integrity
Repair corrupted ZIP archives on the local area network
Fix the error Cannot open file: it does not appear to be a valid archive in ZIP archives

If you're tired of trudging through endless menus from the start button, this may be the answer to your prayers. Maverick is a powerful and flexible launcher combining ease of use with a myriad of features and utilities including a sophisticated alarm clock, a hex viewer, an advanced font viewer, a file wiper, a file toucher, a file/disk profiler, a zip reader/writer, and a zip repair tool.
Maverick is suitable for beginners and experts alike.