Freeware: Data Compression

	CyberArchive  License: Freeware
	Cyber Archive is a data compression and archival program which also serves as a demonstration for the Cyber Compression Suite and Cyber Operations' data compression services. Our service includes taking your existing data or file format and creating a matching compression algorithm for maximum optimization of the data structure. Using our large array of compression algorithms and strategies we can produce a product that far outperforms off-the-shelf compression engines such as zlib. We can custom produce a compression algorithm with emphasis on throughput, compression ratio, memory requirements, or any other factors that are important to the customer. Numerous algorithms working together in Cyber Archive allow the proper emphasis on speed, compression ratio, and memory requirements for a particular application. Cyber Archive includes an abundance of algorithms, but is also designed to allow new (or special purpose) algorithms to be easily integrated into the system. A sequence of algorithms is applied to raw information based on several factors. Some algorithms are used for speed critical situations. More complex algorithms are used when maximum compression is a priority. Cyber Archive can determine the most effective algorithm based on heuristics of the data being compressed, and the required data throughput of the system. Cyber Compression Suite is OS independent. Cyber Compression Suite compression methods and algorithms include zlib, LZP, LZFast, arithmetic encoding variants, BWT, and the Markov model based X1 algorithm. Please visit the Cyber Operations website for more information on CyberArchive including a whitepaper on our Compression Suite. Author: Cyber Operations, Inc.| Date: 15-11-2006 | Size: 647 KB
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	Handy Backup Lite  License: Freeware
	Handy Backup Lite is an easy-to-use freeware backup program designed for an automatic backup and restore of your critical data virtually to any type of storage media including remote FTP servers. You can use Handy Backup Lite to make a reserve copy of any valuable data on your system. Handy Backup Lite is designed for MS Windows 9x/NT/2000/ME/XP. You only need to setup it once and it will monitor changes and execute scheduled backups and synchronizations at the time you specify. Strong file encryption, password protection and zip compression on the fly and many other features will protect your valuable data. Detailed online help is available. Author: Novosoft LLC| Date: 13-04-2006 | Size: 1455 KB
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	Chilkat XML Messaging  License: Freeware
	Makes adding peer-to-peer XML messaging to your distributed applications easy. Integrates with Chilkat SSL, Chilkat Real-Time Compression, and Chilkat Crypt for automatic compression and security. Send and receive XML messages. Integrates with Chilkat SSL for secure messaging over SSLv3 or TLSv1. Integrates with Chilkat Crypt for automatic encryption and decryption of messages using the Rijndael, Twofish, or Blowfish symmetric encryption algorithms. Integrates with the Chilkat Real-Time Compression component for automatic compression and decompression of messages. Send and receive binary or text messages using CkData. The CkData component is handy for loading/saving data to files, accessing as binary, strings (with or without line-endings translated), Base64, Quoted-Printable, compressed, encrypted, etc. Send and receive raw binary data at the socket level if desired. Author: Matt Fausey| Date: 04-03-2002 | Size: 1000 KB
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	CHAOS Compressor  License: Freeware
	Data compression utility, which allows you to quickly open, create, and modify your archives. Author: Safe Soft Corporation| Date: 22-08-2004 | Size: 491 KB
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	Polar Zip Light Free  License: Freeware
	Polar Zip Light is a free zipping component for use in any Windows application. It is an ActiveX control, which adds seamless data compression solutions to you applications. It performs adding, extracting, deleting and listing files in archives. Polar Zip Light is ideal for individuals, small business and enterprise software developers. It is user-friendly and free, suitable for beginners and professionals. Polar Zip Light is compatible with PKZIP 2.04g file format. Its key features include: 1. Standard Zip and UnZip Actions: creating and deleting zip files, compressing and decompressing entire directories and their contents or a list of directories, specifying the directory where files will be decompressed to 2. General zip information like using wildcards to specify the files to be processed, specifying the name and location of a zip file, events provide data such as file size before compression, the compressed file size and other information, getting the full control over zip comments 3. General process information like setting compression level, working on temporary copies of zip files for maximum safety, getting notification whenever a file is zipped, unzipped, updated, deleted, etc. Also all operation can be aborted. Providing the status of the progress by file and globally with the data shown as percentages, bytes and file counts. Easily updating your progress bars directly with this information, option of limits file processing based on file dates: does not operate on files modified after/on the date you specify. Author: Polar| Date: 26-06-2006 | Size: 6932 KB
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	FastCodec  License: Freeware
	FastCodec - free fast lossless video codec designed for video capture. Another usage - video data archiving. Supported input and output formats are: YUY2/YUNV/V422/YUYV, YVYU, UYVY/Y422/UYNV, RGB24, RGB32. Codec has two compression modes: lossy (only for RGB input) and absolutely lossless. Preview decompression mode allows fast decompression with poor quality. Codec supports logging during compression/decompression. With automatic CPU detection codec may choose optimal algorithm implementation. Processor with at least MMX instructuins is requred, SSE2 support is recommeded. Compression/decompression algorithm is relatively simple with low memory usage. It can be efficiently implemented in hardware. Author: VideoSoft.org| Date: 01-08-2006 | Size: 166 KB
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	Pixel-Zip Decompressor  License: Freeware
	Pixel-Zip is a raster image compressor and decompressor designed specifically for the graphic arts and related markets with especially developed large file, 16-bit and native CMYK mode compression support with algorithms tailored at maximum colour and quality retention. You may not know this, but many similar technologies in the market actually convert CMYK images into RGB, compress and store this RGB data and then decompress and convert RGB back to CMYK, distorting and changing colour — a devastating effect in the graphic arts business. Maximum lossless compression is delivered whilst noise and grain can also be removed at the same time, improving image quality further. Pixel-Zip's cutting image compression algorithms are based on Wavelet Analysis combined with several other unique technologies, which puts the product far ahead of any similar software in the image compression field. It is possible to achieve 200 times compression with no image quality loss! Author: Pixel-Zip Team| Date: 01-05-2007 | Size: 753 KB
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	NTFSRatio  License: Freeware
	NTFS offers file based compression but the compression rate isn't displayed anywhere. For any folder on an NTFS volume, NTFSRatio shows the size and the compression rate of this folder and also of its subfolders. Compression and decompression can be done inside NTFSRatio with immediate review of the result. Results can be printed or exported. NTFSRatio can be called from the Explorer context menu of any folder. Author: JAM Software| Date: 22-10-2007 | Size: 946 KB
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	SecureZIP Express for Desktop  License: Freeware
	SecureZIP Express is the industry-leading security and compression utility that zips and unzips files, greatly reducing transmission times and storage requirements, while securely protecting data in transit and at rest with passphrase and digital certificate based encryption. Author: PKWARE Inc| Date: 12-08-2008 | Size: 14028 KB
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	Toponoky  License: Freeware
	Toponoky is a free lossless video codec. Use it for high quality video data archiving or capturing. It’s compatible with any video editing program like VirtualDub or Adobe Premiere. Codec supports lossless and lossy compression modes. Lossy mode allows to select wishful video quality. Toponoky has a simple user-friendly interface with visual settings representation. Each setting has a detailed description. Codec is free for non-commercial use. Author: VideoSoft.org| Date: 22-12-2006 | Size: 183 KB
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	7-Zip  License: Freeware
	7-Zip is a file archiver with the highest compression ratio. The program supports 7z, ZIP, RAR, CAB, ARJ, CPIO, RPM, DEB, GZIP, BZIP2 and TAR formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format. Also 7-Zip compresses to ZIP 2-10% better than PKZip and WinZip. 7-Zip has additional powerful command line version and FAR Manager support. Author: Igor Pavlov| Date: 11-12-2003 | Size: 920 KB
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	Remora USB File Guard  License: Freeware
	Remora (rĕm´ere) : warmwater fishes of the family Echeneidae, characterized by an oval sucking disk on the top of the head. With this apparatus the remora, or suckerfish, attaches itself to sharks, swordfishes, drums, marlins, and sea turtles. In this way it travels without effort... Remora USB File Guard is designed to do file encryption and compression in your USB storage devices. With Remora USB File Guard, you can secure all your files and store them in USB disk anytime and anywhere. And it is totally free, no spyware and adware. Main features: (1) Copy files and folders to mobile disk and do encryption on the fly. (2) Copy files and folders to mobile disk and do compression and encryption at the same time on the fly. (3) Fast encryption and compression using strong 128 bits encryption technique, and at least a 50% compression rate to double your storage capacity. (4) Simple and easy to start. Author: Essential Skill Consultants Limited| Date: 05-07-2006 | Size: 2565 KB
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	Handy Backup  License: Freeware
	Handy Backup 2.1 is an easy-to-use yet powerful backup program designed for Windows 9x/NT/2000/Me/XP. It makes an automatic backup of your critical data virtually to any type of storage media: floppy disk, hard drive, network drive, or a remote FTP server. You only need to setup it once and it will monitor changes and execute scheduled backups and synchronizations at the time you specify. Strong file encryption, password protection and zip compression on the fly and many other features will protect your valuable data. Detailed online help is available. Intuitive Explorer style user interface You'll find Handy Backup extremely easy-to-use due to its simple Explorer-like user interface. Smart Setup Wizard and online help will guide you through all the steps of creating and managing backup items. Support for different types of backup storage Handy Backup is designed to work with almost any type of storage media, including various removable media, zip-drives and CD-R(W)s. You can also send backups to local network drives or to remote FTP servers. Flexible and powerful scheduler A versatile scheduler enables you to automatically back up your critical files on customized or regular basis, from hourly to monthly basis. At any time you can do your backup manually or modify the backup schedule to fit your needs. Integrated ZIP compression You can either copy files to their destination as-is or employ built-in ZIP compression to minimize your time online and used storage space. 128 bit encryption We offer you 128-bit encryption support, which is now the highest level of protection used in Internet communications. Flexible file and folder selection criteria An option to use wildcards, templates and/or inclusion/exclusion rules to fine-tune your backup items. Author: Vladimir Vaschenko| Date: 25-10-2001 | Size: 1449 KB
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	BIGSPEED Voice Compression SDK  License: Freeware
	BIGSPEED Voice Compression SDK is a simple, low-complexity, low-cost voice engine for quick development of VoIP applications. It incorporates audio recording/playback and voice compression/decompresion in a single COM automation object, along with some advanced voice processing features.    The used audio format is wideband, 16kHz, 16Kbps, PCM. The compression ratio is adjustable and can vary from 4:1 to 50:1.    A lot of bandwidth can be addionally saved thanks to the silence compression. A voice activity detector (VAD) with an adjustable threshold level is used to distinguish between regions with normal speech activity and those with silence or background noise.    An optional echo suppression can be employed thanks to the robust double talk detector. When a double talk situation is detected, the output signal is faded (half-duplex).    An automatic gain control (AGC) system is implement with a dynamic range 10:1. A noise reduction is performed on the microphone signal to decrease the white noise.    BIGSPEED Voice Compression SDK utilizes an elegant event-driven paradigm for easy integration into Windows applications. A special attention is paid to provide responsive user interface while maintaining low CPU usage. Carefully designed set of properties, methods, and events offers great flexibility to develop innovative communication software. Sample applications are included in Visual Basic .NET, and Delphi 7. Author: BIGSPEED Computing Inc.| Date: 20-05-2008 | Size: 557 KB
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	ZipItFree  License: Freeware
	ZipItFree was designed to be better than Winzip and WinRar combined. While WinZip charges $29.95, ZipItFree is absolutely free. Compress even more with our new Black Hole super compression. Save disk space and email transmission time. Hot Features: * Full Windows Vista & XP Support * Easy, Modern User Interface * Higher Compression Ratios * ZIP2.0 High Secure ZIP Encryption * Comment Archives & Files * Multiple Compression Formats * Extract from .RAR Files * Verify Integrity of Multiple Archive * Flexible User Interface * Tight Integration with Windows * Large Zip File Support * One Click Zip & E-mail * Split Zip File Capability Author: MicroSmarts LLC| Date: 11-02-2008 | Size: 4234 KB
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	Chilkat Real-Time Compression Component  License: Freeware
	Chilkat RT Compress is a free COM component offering real-time memory-to-memory compression and decompression. Author: Matt Fausey| Date: 18-12-2002 | Size: 1000 KB
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	7-zip++  License: Freeware
	7-Zip can also open any file format that uses a supported compression method. For instance, it is possible to open MSI files in 7-Zip that include the files to be installed with the file itself (otherwise, the files are stored in CAB files, also supported). This makes 7-Zip a good tool to check if a file is an archive. For ZIP and gzip files, 7-Zip uses a modified implementation of the DEFLATE algorithm that is tuned for higher compression levels at the expense of speed. This implementation is also used in the AdvanceCOMP tools. The native 7z file format is an open, modular architecture which allows it to contain files compressed Unicodeusing different algorithms.7-Zip supports a number of other compression (and non-compression) archive formats. These supported formats include ZIP, Microsoft cabinet (CAB) files, RAR, ARJ, gzip, bzip2, LHA, tar, cpio, rpm and Debian deb archives.-Zip also supports ISO CD/DVD images. Author: freeware.softwareclub.ws| Date: 16-10-2006 | Size: 2154 KB
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	jZip  License: Freeware
	jZip is a powerful and reliable compression utility which allows you to create, extract and manipulate Zip, RAR, TAR, GZip, 7-Zip and other file archives. jZip is based on proven and reliable 7-Zip archiving technology and sports an elegant, easy to use yet powerful user interface. jZip is a free WinZip alternative. Software Features: * Creates and extracts Zip compatible archives. * Supports other archive formats such as RAR, TAR, GZip and ISO. * Instantly compresses webmail attachments. * Improves compression ratio with 7-Zip format. * Fast and reliable engine. Author: Discordia Limited| Date: 20-05-2008 | Size: 2761 KB
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	m9P Zipper  License: Freeware
	m9P Zipper is a file compression (zipping) and decompression (unzipping) utility. This tool, capable of up to 0.9 compression ratio, outputs a zipped file that is a mere shadow of the original one! mental9Production uses m9P Zipper to zip large log files (.log) for archiving purposes. But m9P Zipper can be used to zip many other file types. Also, m9P Zipper zipped-files are compatible with other standard zipping programs, and vice-versa, m9P Zipper can unzip files zipped with those programs. Note that m9P Zipper is a simple tool and designed to compress only single files and not complete directories. However, a zipped directory containing many files can be unzipped using m9P Zipper. Finally, the application enables you to send zipped files as e-mail attachments directly from an integrated e-mail program. Enjoy using m9P Zipper free of charge courtesy of mental9Production. Download this free full version (size ~2MB). Author: mental9Production| Date: 16-02-2005 | Size: 2037 KB
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	ZipForge  License: Freeware
	ZipForge is a fast ZIP compression library. With this toolkit you can easily add archive functionality to your projects. ZipForge 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 like a reliable database system. ZipForge Personal is free for personal use. Any company must order commercial versions of ZipForge to use it in its projects. Key features: - Creates archive files in wide known ZIP format by PKZIP, Inc. - Native VCL; no DLLs; no OCXs - Adds, moves, extracts, deletes, updates, tests, refreshes a group of files by a single operation - Free for personal use - Creates self-extracting (SFX) archives - Performs regularly archive updates using transactions that allows canceling all modifications at any time in case of some failures. Also this technology optimizes the speed of the archive modification - Compresses large files with low memory consumption - Comprehensive help; lots of demos - Repairs damaged archives - Zip64 format is supported; maximum archive size is 2^63 bytes - Archive splitting and multiple disk spanning support Author: Andrew Harrison| Date: 22-09-2003 | Size: 6431 KB
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	Back2zip  License: Freeware
	Did you know that 96% of computer users report experiencing serious data loss over a five-year period? In other words, it's just a matter of time before you experience your next major data loss. How will you feel when you realize your documents are just gone? Sure you mean to back up regularly but how often do you remember to do so? Sure, you can pretend that nothing is going to happen to your data but you're fooling no-one. Well, we've crafted an elegant solution which we call Back2zip. Back2zip uses the industry's most powerful ZIP and ZIP-64 technologies to constantly monitor your documents and make sure that they are always properly backed up to ZIP files. Back2zip is so powerful that it can work away completely in the background without interrupting your work. It just takes ten seconds to set up and then it works away quietly and automatically protecting your documents so you can enjoy total peace of mind. Author: Free-backup.info| Date: 19-04-2005 | Size: 523 KB
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	ZipItFree - Most Recommended Download  License: Freeware
	ZipItFree was designed to be better than Winzip and WinRar combined. While WinZip charges $29.95, ZipItFree is absolutely free. Compress even more with our new Black Hole super compression. Save disk space and email transmission time. Download now. Hot Features:   * Full Windows Vista Support   * Easy, Modern User Interface   * Higher Compression Ratios   * ZIP2.0 High Secure ZIP Encryption   * Comment Archives & Files   * Multiple Compression Formats   * Extract from .RAR Files   * Verify Integrity of Multiple Archive   * Flexible User Interface   * Tight Integration with Windows   * Large Zip File Support   * One Click Zip & E-mail   * Split Zip File Capability Author: MicroSmarts LLC| Date: 28-01-2008 | Size: 4233 KB
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	ZLIB.NET  License: Freeware
	100% managed version of ZLIB compression library. Full C# source code is included. Features:  C# source code  Absolutely free  BSD style license Author: ComponentAce LTD| Date: 09-09-2006 | Size: 154 KB
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	GMJ  License: Freeware
	Free information portal on your mobile phone – news, weather, jokes and gags, toasts, blogs, polls, dictionaries, horoscopes, advice, scam alerts and other important information. It is possible to send personal messages, send messages and news to the e-mail. It’s much faster, more convenient and more compact than a mini-browser. High degree of data compression lessens the payment for mobile internet access. GMJ is suitable for all types of mobile devices and has traffic tens of times lower than when using mini-browsers. For the UK customers the payment for mobile internet access – due to the high degree of data compression – is usually no more than 4-6 pounds a month at the rates of Vodafone and Orange. For the US customers, the payment for mobile internet access is no more than a few dollars a month using Internet access with payment per traffic without inclusive web traffic package. It can even be free of charge in most of the Data/Web/PDA tariff options with the inclusive traffic package of 1-5mb. The GMJ typical customer's traffic per month does not exceed 2mb without loading the pictures. The following free programmes are available today: GMJ Mobile News and GMJ Weather. GMJ Mobile News is designed to download news and a variety of other information onto your mobile telephone. The information is supplied free of charge. Mobile News enables you to run your personal blog from your telephone and to present it for other users to read. The GMJ Weather programme is designed to download the weather forecast for any region of the world. The GMJ News Mission: we strongly believe that people would have happier lives if they had easy access to the latest jokes, toasts, horoscopes, advice, scam alerts and other important information. GMJ News will not only focus on terror and crime—which we have plenty of—, but we will also present news that is good. There really are a lot of good things happening around us to share. Author: OLSOFT| Date: 12-03-2007 | Size: 89 KB
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	Acritum One-click BackUp for WinRAR  License: Freeware
	One-click BackUp (OCB) is a powerful but easy-to-use file backup manager for WinRAR. RAR files can usually compress content 8 to 30 percent better than ZIP compression, providing better file safety and secrecy. OCB is capable of creating RAR and ZIP archives, as well as self-extracting EXE archives - you won't need any software at all to extract your files. Working with the program is real pleasure because of the intuitive interface and customizable skins. OCB provides all key features of WinRAR: high compression ratio, AES 128bit encryption, volumes and other useful stuff. Moreover, OCB allows you to store archives in different places to increase the safety of your files (HDD, USB drives, FDD, ZIP, CD/DVD, network folders or drives, FTP and SMTP servers). The program also has an internal scheduler, which can be used to execute backup tasks at defined time and it supports the command line, so you can also use OCB with external schedulers. Besides the standard scheduler features, OCB has a Shell Notifier to automatically start the backup process when the content of a selected folder changes. Sysadmins will enjoy the startup service, anti-hooligan protection and the remote control feature. You can start, stop, schedule or un-schedule backup tasks remotely from any computer connected to the Internet or the LAN. The remote control makes it possible for you to see all program responses in real-time, the complete log and the schedule list. Remote control can also be used to reboot, shutdown or hibernate the computer immediately or at a desired time. Most of the time, OCB is hidden to the system tray and doesn't bother you, doing its work with a low priority. However, whenever an error occurs, OCB will immediately send a notification to your e-mail. You will be able to find out what happened using the detailed log file which is accessible both from the main window and from the remote access via a web browser such as Internet Explorer. Author: Acritum Software| Date: 20-11-2006 | Size: 1109 KB
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	PECompact (Student version)  License: Freeware
	PECompact compresses Windows modules (EXE, DLL, SCR, etc..) substantially, while leaving them able to be run just as before. At runtime, compressed modules are rapidly decompressed in memory. Smaller (<50%) size usually means quicker load time. PECompact generally compresses files much smaller than if they had been compressed by modern data compression software such as RAR. This is accomplished by restructuring and pre-processing that make modules more compressible. Compression also adds a layer of security to modules that resists tampering and reverse engineering. PECompact supports multiple compression formats, including LZMA, through the use of CODEC plug-ins. Custom loaders (decompression) stubs and API hook plugins are also able to be utilized. Advanced configuration includes selection of resource types that should be compressed as well as other parameters that offer a great deal of control over how modules are compressed. A GUI and console mode application that supports wildcards and directory recursion are included. THIS FREEWARE (STUDENT) VERSION MAY ONLY BE USED TO COMPRESS MODULES THAT WILL NOT BE SOLD OR BARTERED IN ANY WAY. Author: Bitsum Technologies| Date: 20-03-2005 | Size: 914 KB
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	Go FTP  License: Freeware
	GoFTP is a FTP client that uses special "buffer overstuffing" technology and on-the-fly compression to achieve speeds 3x of other multi-threaded FTP programs. It supports encryption including SFTP and FTPS. It has all of the features of the leading FTP programs including site management, job queueing and processing, and an option to save an entire queue as a file for later processing. Author: Go Communications| Date: 13-02-2007 | Size: 2 KB
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	BigSpeed Zipper  License: Freeware
	BigSpeed Zipper is a .zip format compression utility. Being simple and intuitive to use with its explorer-style interface, it boasts a large number of features the other utilities on the market do not have. The most notable one is the ability to extract files from archives on remote servers without having to download the archive.The possibilities given by this and other features change the whole concept of an archive utility. BigSpeed Zipper also allows you to search in all zip files on the disk for specified files or text inside them, view the contents of zip files while downloading them, automate frequently used compression operations, backup files in zip format to disk or FTP server, upload zip files to FTP servers, send zip files as email attachments, synchronize the contents of zip files and folders, split/join files to/from smaller chunks, repair damaged zip files, create self-extracting packages, create multiple volume zip archives (including on non removable drives). And even this isn't all this program can do. If you require maximum functionality from a .zip utility, make this one your first choice. It's free, by the way! Author: BigSpeed Software| Date: 10-02-2004 | Size: 777 KB
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	Snap Backup  License: Freeware
	Snap backup makes it easy to frequently backup and archive your valuable data. The first time you run Snap Backup, you configure where your data files reside and where to create backup files. You can also specify an archive location, such as a USB drive or a Zip drive, for storing backup files. Snap Backup automatically puts the current date in the backup file name, alleviating you from the tedious task of renaming your backup file every time you backup. The backup files are standard compressed files that can be read by any of the popular zip programs. Author: Center Key Software| Date: 16-07-2005 | Size: 117 KB
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	Chilkat Create Self-Extracting EXE from Zip  License: Freeware
	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. Chilkat's 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. Author: Matt Fausey| Date: 3-11-2003 | Size: 300 KB
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