Search Results for "compression"
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Showing 128 open source projects for "compression"
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Zstandard
Zstandard - Fast real-time compression algorithm
Zstandard is a fast compression algorithm, providing high compression ratios. It also offers a special mode for small data, called dictionary compression. The reference library offers a very wide range of speed / compression trade-off, and is backed by an extremely fast decoder (see benchmarks below). Zstandard library is provided as open source software using a BSD license. -
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LZ4
Extremely fast compression algorithm
LZ4 is lossless compression algorithm, providing compression speed > 500 MB/s per core (>0.15 Bytes/cycle). It features an extremely fast decoder, with speed in multiple GB/s per core (~1 Byte/cycle). A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio. LZ4 library is provided as open-source software using a BSD license. -
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Brotli
Brotli compression format
...This happens when "one-shot" decoding API is used (or input chunk for streaming API is not limited), input size (chunk size) is larger than 2GiB, and input contains uncompressed blocks. After the overflow happens, memcpy is invoked with a gigantic num value, that will likely cause the crash. Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression. The specification of the Brotli Compressed Data Format is defined in RFC 7932. ... -
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Borg
Deduplicating archiver with compression and encryption
BorgBackup or Borg for short is a deduplicating backup program that also supports compression and authenticated encryption. It provides a secure and efficient way to backup data, and is ideal for daily backups and backups to not fully tested targets. -
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Reliable PostgreSQL Backup & Restore
Reliable PostgreSQL backup and restore
pgBackRest aims to be a reliable, easy-to-use backup and restore solution that can seamlessly scale up to the largest databases and workloads by utilizing algorithms that are optimized for database-specific requirements. Compression is usually the bottleneck during backup operations but, even with now-ubiquitous multi-core servers, most database backup solutions are still single-process. pgBackRest solves the compression bottleneck with parallel processing. Utilizing multiple cores for compression makes it possible to achieve 1TB/hr raw throughput even on a 1Gb/s link. ... -
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SSZipArchive
ZipArchive is a simple utility class for zipping and unzipping files
ZipArchive is a popular Objective-C and Swift library for handling ZIP file compression and extraction in iOS and macOS applications. It provides a simple API to create, extract, and manage compressed files. -
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7-Zip
A free file archiver for extremely high compression
7-Zip is a file archiver with a high compression ratio. 7-Zip works in Windows 11 / 10 / 8 / 7 / Vista / XP / 2022 / 2019 / 2016 / 2012 / 2008 / 2003 / 2000. You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. And there is command line version for Linux and macOS. Most of the source code is under the GNU LGPL license. -
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OptiPNG
Advanced PNG optimization program
OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections. -
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Nikkho
Javier Gutiérrez Chamorro (Guti) Open source projects
Javier Gutiérrez Chamorro (Guti) Open source projects Author's website: https://www.javiergutierrezchamorro.com -
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parolin
zlib and zstd multithread enhancements
gzip3: Compressor gzip multithread com chunk de 128 KB, work stealing entre 64 compartimentos NUMA, escritor centralizado sequencial. Escala até 512 threads. Ideal para dados "quentes" onde velocidade de compressão importa. zstd3: Compressor Zstandard multithread com chunk de 2 MB, fatias contíguas por thread, cada uma escreve em temp file próprio, main concatena no final. Sem contenção durante compressão. Máx 128 threads. Ideal para dados "frios" onde densidade importa. -
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Win32 and Win64 DLL to compress, uncompress, delete, test and list standard zip files, full Unicode support added at 06/November/2020, another option with more features about zip capabilities is the Parolin project at http://parolin.sourceforge.net/, if Winrar and 7zip compatability is important Parolin is a better option also statndard AES encryption is included
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Win32 and Win64 DLL to compress files in the standard Gzip format and also the new Gzip2, this format can compress files as large as 9.223.372.036 gigabytes and has also MD5 the integrity check, now also SHA512 too, now with support to multi-threads
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littleutils
Various small and useful command-line utilities
The littleutils include duplicate file finders (repeats, repeats.pl, repeats.py), image optimizers (opt-jpg, opt-png, opt-gif, recomp-jpg), file rename tools (lowercase, uppercase, pren), archive recompressors (to-gzip, to-bzip2, to-bzip3, to-7zip, to-lzma, to-lzip, to-xz), a tempfile utility (tempname), file property tools (filedate, filemode, filenode, fileown, filesize, and lrealpath), and others. See the README file for more details. -
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Amanda is the most popular Backup and Archiving software that protects multiple machines running various versions of Linux, UNIX and Microsoft Windows operating systems. It supports tapes, disks, optical media and changers.
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XSIBackup-App
Backup and replicate Linux files, databases and ©VMWare ©ESXi VMs
Free virtual appliance to backup and replicate Linux servers and ©VMWare ©ESXi virtual machines from version 5.1 to 8.0. https://33hops.com/xsibackup-app-detailed-installation-instructions.html ©XSIBackup-App connects to multiple Linux or ©ESXi servers and backs VMs & files up to, local disk, NFS, iSCSI, Samba, etc... or to any Linux or ©ESXi server over IP, it just needs the SSH port open. This appliance is based in CentOS 7 and has root access. You can install any available... -
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G4L
G4L 0.70 released 05/29/26 Disk imaging
...Changes in 0.70 Release 0.70a started 2026/03/10 Fedora 43 13329408 May 23 22:37 bz7x0.10 13333504 May 18 09:45 bz7x1.rc4 New BusyBox v1.39.0.git (2026-05-13 15:14:04 ChST) multi-call binary. Old BusyBox v1.38.0.git (2026-05-05 12:53:35 ChST) multi-call binary. added fstrim Change bz2 compression with zstd compress is test script Add prepdisk option to clean ext type file systems using fstrim and with zerofree. remove linuxrc from busybox and /linuxrc since initrd no longer used, so not needed for initramfs -
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LAME (Lame Aint an MP3 Encoder)
A high quality MP3 encoder
LAME is an educational tool to be used for learning about MP3 encoding. The goal of the LAME project is to improve the psycho acoustics, quality and speed of MP3 encoding. Note: we provide source code only! -
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XSIBackup-DC
VMWare ESXi Virtual Machine Backup, runs in free ESXi
©XSIBackup-DC is a C binary that runs in the ©ESXi shell and behaves as a backup and replica service. It follows the same principles as our previous ©XSIBackup editions, that is: a utility that runs in the hypervisor command line and accepts arguments and values stating which VMs to backup and where to copy them. It accepts local and remote SSH paths, thus you can backup and replicate VMs to local datastores or to remote repositories in any additional ©ESXi or Linux server. Download... -
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Major looseless compression algorithms library and documentation. First project: Arithmetic, Huffman, LZ77, LZ78, LZW, RLE. Second project reimplements Deflate. Documentation explains major Entropy Compression Methods.
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clzw
Implementation of LZW compression algorithm in C
Simple, fast implementation of LZW (Lempel–Ziv–Welch) data compression algorithm in C. - Console encoder/decoder tools - OS independent - Could be used in embedded projects - Works with raw code-stream LZW features: - Hardcoded dictionary size - Variable code size - Code search is performed by hash table and embedded in dictionary linked lists (encoder) - No dynamic memory allocation -
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The jbig2dec project is no longer hosted here. Please see: https://www.ghostscript.com JBIG2 is a compression format for lossless and lossy encoding of scanned monochrome documents at moderately high resolution. It is very efficient in that domain, claiming 100:1 compression. jbig2dec is a decoder-only implementation of the format.
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A portable version of the ARJ archiver, available for a growing number of DOS-like and UNIX-like platforms on a variety of architectures.
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