zlib : Designed to be a free, general-purpose, legally unencumbered, lossless data-compression library for use on virtually any computer hardware

zlib is designed to be a free, general-purpose, legally unencumbered, lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across platforms. Unlike the LZW compression method used in Unix compress(1), the compression method currently used in zlib essentially never expands the data. (LZW can double or triple the file size in extreme cases.) zlib's memory footprint is also independent of the input data and can be reduced, if necessary, at some cost in compression.

• Licenses : zlib/libpng
• Operating Systems : OS Independent
• Implementation : C

Ziproxy : A high-performance forwarding (non-caching) HTTP proxy that gzips text and HTML files, and reduces the size of images

Ziproxy is a high-performance forwarding (non-caching) HTTP proxy that gzips text and HTML files, and reduces the size of images by converting them to lower quality JPEGs or JPEG 2000. It is intended to increase the speed for low-speed Internet connections (mobile, dial-up, other). It's suitable for both home and professional usage. Ziproxy is fully configurable and also features transparent proxy mode, HTML/JS/CSS optimization, operation in daemon mode, a detailed access log with compression statistics, basic authentication, and more.

Licenses : GPLv2, GPL

Operating Systems : Linux, BSD, Cygwin, Mac OS X, FreeBSD

Implementation : C

Ziproxy : A high-performance forwarding (non-caching) HTTP proxy that gzips text and HTML files, and reduces the size of images

Ziproxy is a high-performance forwarding (non-caching) HTTP proxy that gzips text and HTML files, and reduces the size of images by converting them to lower quality JPEGs or JPEG 2000. It is intended to increase the speed for low-speed Internet connections (mobile, dial-up, other). It's suitable for both home and professional usage. Ziproxy is fully configurable and also features transparent proxy mode, HTML/JS/CSS optimization, operation in daemon mode, a detailed access log with compression statistics, basic authentication, and more.

• Licenses : GPLv2, GPL
• Operating Systems : Linux, BSD, Cygwin, Mac OS X, FreeBSD
• Implementation : C

NexentaStor leverages the ZFS file system and is optimized for use in 2nd-tier NAS and iSCSI applications

NexentaStor leverages the ZFS file system and is optimized for use in 2nd-tier NAS and iSCSI applications requiring open, low cost, high performance storage as well as dramatically simplified provisioning, expansion, backup, replication, and archiving. It is also used as a primary NAS in businesses that wish to expand at closer to commodity pricing. It supports unlimited snapshots, snapshot mirroring (replication), block level mirroring, integrated search, and easy management of extremely large storage pools.

• Operating Systems : Unix

Ziproxy : A high-performance forwarding (non-caching) HTTP proxy that gzips text and HTML files

Ziproxy is a high-performance forwarding (non-caching) HTTP proxy that gzips text and HTML files, and reduces the size of images by converting them to lower quality JPEGs or JPEG 2000. It is intended to increase the speed for low-speed Internet connections (mobile, dial-up, other). It's suitable for both home and professional usage. Ziproxy is fully configurable and also features transparent proxy mode, HTML/JS/CSS optimization, operation in daemon mode, a detailed access log with compression statistics, basic authentication, and more.

• Licenses : GPLv2, GPL
• Operating Systems : Linux, BSD, Cygwin, Mac OS X, FreeBSD
• Implementation : C

The lzlib compression library provides in-memory LZMA compression and decompression functions

The lzlib compression library provides in-memory LZMA compression and decompression functions, including integrity checking of the decompressed data. The compressed data format used by the library is the lzip format.

• Licenses : GPLv3
• Operating Systems : OS Independent
• Implementation : C, C++