Zstandard
 |
|
| Original author(s) | Yann Collet |
|---|---|
| Developer(s) | Yann Collet, Przemysław Skibiński (inikep) |
| Initial release | 24 January 2015 |
| Stable release |
1.3.2 / 9 October 2017
|
| Repository | github |
| Development status | Active |
| Written in | C |
| Operating system | Cross-platform |
| Platform | Portable |
| Type | Data compression |
| License | BSD License |
| Website | facebook |
Zstandard (or Zstd) is a lossless data compression algorithm developed by Yann Collet at Facebook. The name also refers to the reference implementation in C. Version 1 of the implementation was released as free software on 31 August 2016.
Zstandard was designed to give compression comparable to that of DEFLATE (ZIP, gzip) with higher compression / decompression speeds. Zstandard combines use of a dictionary-type algorithm (LZ77) and Finite State Entropy (tANS) stage of entropy coding.
The reference implementation is licensed under the BSD license, published at GitHub. Since version 1.0, it had an additional Grant of Patent Rights.
From version 1.3.1, this patent grant was dropped and the license was changed to a BSD + GPLv2 dual license.
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