Free chilkat zip compression c software for windows

Best selling Zip ActiveX component for VB6, classic ASP, Visual FoxPro, Delphi, and other programming languages that support ActiveX.
Main features:
- New:Events for zip/unzip progress monitoring.
- Zip an entire directory tree.
- Append entries to a Zip from in-memory data.
- Create or open in-memory Zips.
- Create self-extracing executables.
- Create password-protected Zip files.
- Unzip only files that match a filename pattern.
- Option to discard path information when zipping.
- Option to append a path prefix when zipping.
- Option to create self-extracting EXEs with or without interfaces.
- Ability to customer icon and interface when creating an EXE.
- Ability to specify an auto-run file when creating an EXE.
- Ability to specify a pre-defined unzip directory for an EXE.
- Handles Unicode filenames.
- Provides in-memory access to compressed or uncompressed data.
- Easy FirstEntry/NextEntry methods for iterating over a Zip.
- Can embed Zips in your own EXEs.
- OpenMyEmbedded opens the Zip that has been embedded in the callers EXE.
- Set exclusion patterns when zipping.
- Option to specify a target directory and discard path information when unzipping.
- Can unzip only files that are newer.
- Read/write comments within a Zip.
- Ability to inflate directly to in-memory byte array or string.
- Can read/write Zips with Chilkat-AES or WinZip-compatible encryption.
- Includes a GZip component to create or decompress the .gz file format.
- Includes a Unix compress component to create or decompress the .Z file format using LZW compression.

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.
Chilkats streaming compression and encryption technology allows the ChilkatZip Self-Extractor to create an EXE from any size ZIP file.
The streaming compression and decryption technology also ensures that it will be possible to unzip the archive on your end-user's computer, even if that computer has very little memory.
Features:
- Royalty free licensing. (All Chilkat components are royalty free)
- Incorporates ChilkatLog as the standard error reporting and retrieval mechanism. The ChilkatLog component provides powerful debugging information for resolving problems. This information is invaluable especially when errors can arise from external sources such as networks and filesystems.
- Progress monitoring events allow for zip and unzip operations to be monitored in real time. (See the example programs).
- Get the Zip archives directory in XML format.
- Search for a file within the Zip using a wildcarded string.
- Unzip a file into a specific directory, regardless of the directory information stored within the Zip archive.
- Chilkats Streaming Technology is used to allow any size file to be compressed or decompressed in a constant memory footprint. Even files that are Gigabytes in size can be compressed/decompressed.
- Extract individual files, or files matching a pattern.
- New property for specifying the temporary directory used when unzipping.
- Version property to make it easy for applications to see which version is installed.
- High-performance C++ ActiveX written with ATL 3.0.
- Supports Active Server Pages, Visual Basic, Visual C++, Delphi, C++ Builder, and all languages that use ActiveX controls.
- Fast compression with low memory usage. Includes optimized Pentium assembly code for high-performance.
- Completely compatible with the existing PKZip 2.04g format.
- Zip files created by this component can be used by any existing application that read Zip files.
- Unzip directly to memory or a string.
- C++ wrapper library for easy access to automation-compatible types required by ActiveX control.
- Add, delete, or modify entries within a Zip file.
- Add files to a Zip using wildcarding and recursing directory trees.
- Complete control over the compression algorithm.
- Easily step through each file in the Zip and access the file attributes, compression ratios, etc.
- Create new Zip entries directly from memory.
- Extract from a Zip to the filesystem.
- Online documentation and excellent support.

Chilkat XML C++ Library - High-level non-validating XML parser component that is free for both commercial and non-commercial use.
Main features:
- Load/save XML files to an in-memory document object model (DOM).
- Add name/value attribtes to nodes.
- Compress nodes or entire sub-trees using in-memory Zip compression.
- AES encrypt the content of a node.
- Numerous methods for iterating over the nodes in a document.
- Numerous methods for searching and sorting nodes in a document.
- API designed to make it easy to do frequently encountered tasks when working with XML.
- Makes it easy to handle binary data (such as image data) within XML files.

Replicates an entire directory structure, then compresses all files in each directory using standard ZIP compression. It is ideal for backing up to Zip disks.