If instead of zip files you find a message saying "Cannot open file: it does not appear to be a valid archive", it means that the files are damaged and stand in need of zip repair. To fix the problem, open the files in Zip Repair Tool. The program features a sophisticated recovery algorithm that restores zip structure integrity and helps recover zip files with their contents. You can easily repair zip files of any size and number of volumes.

ZFilter is a plug-in indexing filter for Windows servers. It enables them to full-text index the contents of zip archives created with WinZip, PKZIP, or any other compression program that uses the PKWARE compression format. ZFilter is designed for Internet Information Server, SharePoint, Exchange Server, Site Server and SQL Server: it is compatible with Windows NT 4, Windows 2000, XP and Server 2003.

Create self-extracting ZIP files optionally with unbreakable AES encryption. The ChilkatZip Self-Extractor can safely encrypt the contents of your ZIP file with 128, 192, or 256-bit AES Encryption. To unzip, a user must provide the same password that was used when creating the self-extracting EXE. AES encryption is much stronger than standard ZIP encryption, which is regarded by security experts as being unsecure.

IZArc is the ultimate freeware archive utility supporting many archive formats like: 7-ZIP, A, ACE, ARC, ARJ, B64, BH, BIN, BZ2, BZA, C2D, CAB, CDI, CPIO, DEB, ENC, GCA, GZ, GZA, HA, IMG, ISO, JAR, LHA, LIB, LZH, MDF, MBF, MIM, NRG, PAK, PDI, PK3, RAR, RPM, TAR, TAZ, TBZ, TGZ, TZ, UUE, WAR, XXE, YZ1, Z, ZIP, ZOO.

PECompact is an advanced Windows executable file compressor. It works by compressing the executable or module and then performing decompression in memory at runtime. Not only does this save space and bandwidth, PECompact also adds a level of obsufcation to your binaries. PECompact works by compressing the code, data, import directory, selected resources, and other portions of Windows portable executables.

Rename-It! can rename a lot of files easily but also very quickly: It incorporates in the Shell (via the Explorer's context menu). Filters avaible: Search & Replace (replace a string by another and support regular expressions or wildcards), Case (make the file name uppercase, lowercase ...), Crop (only keeps a part of the file name), ID3 Tag (reads the MP3 files ID3 Tag's info).

ZipItFast 3.0 is a FREE Commercial quality all in one archive utility featuring a windows One Click Zip feature for quick viewing, running, extracting, adding, and deleting files in archives in the fastest time possible. With ZipItFast Pro, you can create SELF EXTRACTING FILES and even password protect them. ZipItFast 3.0 does it all and supports virtually all compression formats including: Zip, Exe, Tar, Cab, gZip, Lha, Ace, Rar and more...