1st Choice Zip and Chilkat Zip Compression C++ Library Software for Windows

Unzip FTP ZipDeploy
$10 - IET2004

FTP Zip and Unzip on server.FTP replication.ZipDeploy is an FTP upload accelerator. It enables you to unzip big packages on your remote host. Depending on package size, 2 to 10 times faster deploy times than regular FTP transfers can be achieved.The Problem : multiple files ... The Solution: ZipDeploy ! Uploading multiple files to a web site hosted remotely, somewhere on the Internet, can be a disgusting job. Transfer speed is not the issue: the actual number of files to be transferred is. The same problem with emails: do you spend time to attach multiple (say, 100) files to send them to a friend? I guess not. You probably Zip them. So, why shouldn't one do the same with FTP transfers? Upload, and FTP unzip them. Unzip server side : Unzip on server. ZipDeploy is different from the normal FTP transfer program. For a start, it's as simple as possible. It's a wizard. It lets you unzip through FTP - simply said- upload and unzip, or unzip via FTP.

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Zip Recovery Toolbox
$27 - Recovery ToolBox

ZIP Recovery Toolbox designed to recover data from corrupted ZIP files. Tool recovers files from ZIP archives and minimizes data loss during recovery. ZIP file recovery tool scans the entire corrupted archive and saves maximum information from the unreadable ZIP file. The software uses several algorithms and methods for recovering data from unreadable ZIP files. The full scan of a ZIP file and several recovery algorithms allow the program to minimize data loss while recovering data from bad ZIP files. Besides, the program checks the integrity of recovered data. The user sees maximum information about the data being recovered from corrupted ZIP archives.
Its convenient and clear interface makes the data recovery process comfortable and clear for users. The tool recovers password-protected files (it is necessary to enter the password to the ZIP file for correct data recovery).
ZIP Recovery Toolbox does not edit, modify or add any information to the source ZIP file. The tool reads the corrupted ZIP file and saves the recovered data to a separate folder on the disk preserving the folder structure and file names of the original ZIP archive.
Features:
- Repair encrypted data from 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 (floppy disks, CDs, DVDs, Zip drives, etc.)
- 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
ZIP files can become corrupted:
- If antivirus software functions incorrectly
- In case of incomplete or interrupted file downloads
- In case of power failures
- In case of errors in the operating system or other software and so on and so forth
Users cannot save recovered files to the disk in the unregistered version of the program. The full scan of a ZIP file takes quite a lot of computer resources.

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Chilkat Zip Compression C++ Library
$149 - Chilkat Software, Inc.

Affordable, advanced Zip Compression Visual C++ Library with many features: Open a Zip on the Web. Open and read or unzip the contents of a Zip file from a URL. Standard WinZip Password-Protection is Supported. Create or open/decrypt password-protected Zips. OpenFromMemory Allows you to open a Zip that is stored in your program's memory. This was created to allow programs to access Zips loaded from sources such as a database (an Oracle BLOB for example). Includes a robust set of events that allow you to closely monitor the progress while zipping and unzipping. Has the ability to abort any zip or unzip operation while in progress. AES Encryption Encrypt your data using up to 256-bit AES encryption. Also supports Blowfish and Twofish encryption algorithms. Embed ZIPs into EXEs Embed ZIP files directly into EXEs, and access them from your program. The ZIP is embedded as a named resource, and any number of ZIPs can be embedded in a single EXE. Create Self-Extracting EXEs Works with the Chilkat Zip 2 Secure EXE utility to access ZIPs embedded in EXEs created by that utility. Unzip Newer Unzips files based on last-modification time. Set Exclusions Exclude files matching wildcarded filenames, such as "*.log". Existing Zip Component Features Create New ZIPs Create new ZIPs from existing files, memory data, or other existing ZIPs. Delete Files in ZIPs Remove specific files within a ZIP. ZIP Entire Directories Recursively descend directories to ZIP everything. Add Files to ZIPs Adds files to existing ZIPs. Merge ZIPs Merge any number of ZIPs into one ZIP. Unzip Unzip and auto-create directories as needed. Unzip Matching Unzip only files matching a wildcarded pattern. Access to Compressed Data Directly access the data in its compressed format. Memory Compression/Decompression Use ZIP compression without ever writing files. Memory-to-ZIP Conversion and Back Allows direct access to data within files in the ZIP.

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Recovery Toolbox for Zip
$27 - Recovery Toolbox, Inc.

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. The use of multiple algorithms allows the program to minimize data loss during zip recovery, therefore the user sees as much as possible about the files being recovered. The last phase of the process is the data integrity check, which ensures that the recovered files are fully usable. Password-protected archives are no problem for Recovery Toolbox for Zip ? you will have to enter the password when prompted and the application will make a fix zip file attempt using the specified password. The program supports Windows 98, Windows Me, Windows NT 4.0, Windows 2000.

Recovery Toolbox for Zip is able to:
- Repair encrypted data from ZIP archives
- Repair self-extracting (SFX) files
- Repair ZIP files larger than 2 GB
- Restore ZIP files from damaged media (floppy disks, CDs, DVDs, Zip drives, etc.)
- Check file integrity
- Repair corrupted ZIP archives on the local area network
- Fix the Cannot open file: it does not appear to be a valid archive in ZIP archive error

One of the fundamental concepts embodied in Recovery Toolbox for Zip is the simplicity of use. Its wizard-driven, intuitive interface makes the process of corrupt zip repair a task literally anyone can perform.

While being a convenient, efficient and habitual method of storing and archiving information, ZIP files can sometimes be a real pain in the neck and a problem that can jeopardize the completion of urgent tasks. A significant fraction of files downloaded from the Internet are compressed into ZIP archives for traffic-saving purposes, which is an obviously positive fact.

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PowerZip
$20 - Trident Software Pty Ltd

Unzip downloads, create your own Zip files and password-protect (encrypt) confidential documents with PowerZip - an easy to use file compression & security program.

PowerZip Compression / Extraction Wizards make working with archives (such as Zip files) easy while providing an array of advanced features. The Wizards are quick to use because they have only a small number of steps; some steps can be switched of if not needed, others can be skipped to use default options. Pop-up tooltips explain the purpose of each button or control.

You can use PowerZip's 128-bit & 256-bit AES encryption to create password-protected Zip files to store confidential documents and files or send them through insecure channels, such as e-mail.

PowerZip supports two new compression methods (Deflate64 and BWT) to provide you with a higher level of compression than is normally available in Zip files. Standard Zip compression is also supported for compatibility with other Zip programs.

PowerZip adds itself to the Windows Explorer right-click menu, enabling you to perform common compression tasks (zipping, unzipping, encryption, splitting) directly from Windows Explorer / My Computer.

PowerZip supports 12 types of archives - PowerZip can create & unzip Zip, Cab, Tar, Bz2, Gz, Arj and Ha archives; PowerZip can also unzip Rar, Ace, Jar, Lzh and Z archives.

If you routinely perform compression tasks (such as daily backups), you can automate them by recording PowerZip Macro Files. Macro Files allow you to repeat the recorded compression (or extraction) task with a simple double-click; you can also run PowerZip Macro Files as part of an automated script.

If you need to distribute large files to friends, colleagues or customers who might not have a Zip program, PowerZip allows you to create a self-extracting archive that can be unzipped without requiring a compression program.

PowerZip 7 license comes with free technical support via e-mail and free upgrades.

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.NET Zip Component ZipForge.NET
$299 - ComponentAce LTD

ZipForge.NET is a fast and powerful ZIP compression component for .NET framework.
It lets you easily create zip files, extract files from zip archives to hard drive, add files to a zip archive, replace, move and delete files. You can also read compressed files from a zip archive into memory, and write the files from memory into a zip archive. Additionaly you can create and read self-extracted SFX archives, encrypted and multi-volume zip files.

ZipForge.NET includes our new unique technology, a transaction system. This innovative solution gives you a fast and easy way of updating archive files
providing data integrity just like reliable database systems.

ZipForge.NET Key features:

- Creates archive files in wide known ZIP format by PKZIP, Inc.
- Adds, moves, extracts, deletes, updates, tests, refreshes a group of files by a
single operation
- Performs regularly archive updates using transactions that allow canceling all
modifications at any time in case of certain failures. Also, this technology
optimizes the speed of the archive modification
- Strong AES Encryption support
- Unicode filenames support
- NTFS timestamps support
- Streaming support
- Progress indication
- Zip64 support
- Spanning and splitting support
- Multi-volume archives support
- Creates and opens SFX (self-exctracting) archives
- Customizable SFX stub (extractor)
- Searches files inside the archive
- Comprehensive help
- A lot demos in C#, VB.NET and Delphi
- .NET 1.1 and .NET 2.0 versions
- Visual Studio 2005 and 2003 support
- Full C# source code is available

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