zlib-ng VS libdeflate

Compare zlib-ng vs libdeflate and see what are their differences.

zlib-ng

zlib replacement with optimizations for "next generation" systems. (by zlib-ng)

libdeflate

Heavily optimized library for DEFLATE/zlib/gzip compression and decompression (by ebiggers)
CodeRabbit: AI Code Reviews for Developers
Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
coderabbit.ai
featured
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives
www.saashub.com
featured
zlib-ng libdeflate
14 7
1,571 1,021
1.0% -
9.1 8.2
4 days ago 11 days ago
C C
zlib License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

zlib-ng

Posts with mentions or reviews of zlib-ng. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-09-20.
  • Discord Reduced WebSocket Traffic by 40%
    2 projects | news.ycombinator.com | 20 Sep 2024
    For what it’s worth, the benchmark on the Zstandard homepage[1] shows none of the compressors tested breaking 1GB/s on compression, and only the fastest and sloppiest ones breaking 1GB/s on decompression. If you’re OK with its API limitations, libdeflate[2] is known to squeeze past 1GB/s decompressing normal Deflate compression levels. So asking for multiple GB/s is probably unfair.

    Still, 10MB/s sounds like the absolute minimum reasonable speed, and they’re reporting nearly three orders of magnitude below that. A modern compressor does not run at bad dialup speeds; something in there is absolutely murdering the performance.

    And it might just be the constant-time overhead, as far as I can see. The article mentions “a few hundred bytes” of payload, and the discussion of measurements implies 1.5KB uncompressed. Even though they don’t reinitialize the compressor on each message, that is still a very very modest amount of data.

    So it might be that general-purpose compressors are just a bad tool here from a performance standpoint. I’m not aware of a good tool for this kind of application, though.

    [1] https://facebook.github.io/zstd/#benchmarks

    [2] https://github.com/zlib-ng/zlib-ng/issues/1486

  • Show HN: Pzip- blazing fast concurrent zip archiver and extractor
    2 projects | news.ycombinator.com | 24 Sep 2023
    Please note that allowing for 2% bigger resulting file could mean huge speedup in these circumstances even with the same compression routines, seeing these benchmarks of zlib and zlib-ng for different compression levels:

    https://github.com/zlib-ng/zlib-ng/discussions/871

    IMO the fair comparison of the real speed improvement brought by a new program is only between the almost identical resulting compressed sizes.

  • Intel QuickAssist Technology Zstandard Plugin for Zstandard
    10 projects | news.ycombinator.com | 16 Aug 2023
  • Introducing zune-inflate: The fastest Rust implementation of gzip/Zlib/DEFLATE
    2 projects | /r/rust | 11 Feb 2023
    It is much faster than miniz_oxide and all other safe-Rust implementations, and consistently beats even Zlib. The performance is roughly on par with zlib-ng - sometimes faster, sometimes slower. It is not (yet) as fast as the original libdeflate in C.
  • Zlib Critical Vulnerability
    4 projects | news.ycombinator.com | 14 Oct 2022
    Zlib-ng doesn't contain the same code, but it appears that their equivalent inflate() when used with their inflateGetHeader() implementation was affected by a similar problem: https://github.com/zlib-ng/zlib-ng/pull/1328

    Also similarly, most client code will be unaffected because `state->head` will be NULL, because they (most client code) won't have used inflateGetHeader() at all.

  • Git’s database internals II: commit history queries
    3 projects | news.ycombinator.com | 30 Aug 2022
    I wonder if zlib-ng would make a difference, since it has a lot of optimizations for modern hardware.

    https://github.com/zlib-ng/zlib-ng/discussions/871

  • Computing Adler32 Checksums at 41 GB/s
    5 projects | news.ycombinator.com | 7 Aug 2022
    zlib-ng also has adler32 implementations optimized for various architectures: https://github.com/zlib-ng/zlib-ng

    Might be interesting to benchmark their implementation too to see how it compares.

    2 projects | news.ycombinator.com | 4 Aug 2022
  • Convenient CPU feature detection and dispatch in the Magnum Engine
    9 projects | /r/cpp | 2 Aug 2022
    zlib-ng: https://github.com/zlib-ng/zlib-ng/blob/develop/functable.c
  • games-emulation/dolphin-9999 is failing to build because devs switched to minizip-ng and zlib uses minizip. I'm not sure how to get it to build now, details in post.
    2 projects | /r/Gentoo | 20 Jun 2022
    (2) There are many packages that rely upon zlib and minizip and switching those underlying dependencies is easier said than done. We can't drop zlib completely and switch: "The idea of zlib-ng is not to replace zlib, but to co-exist as a drop-in replacement with a lower threshold for code change." - https://github.com/zlib-ng/zlib-ng

libdeflate

Posts with mentions or reviews of libdeflate. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-08-26.

What are some alternatives?

When comparing zlib-ng and libdeflate you can also consider the following projects:

zstd - Zstandard - Fast real-time compression algorithm

ZLib - A massively spiffy yet delicately unobtrusive compression library.

zlib - Cloudflare fork of zlib with massive performance improvements

Minizip-ng - Fork of the popular zip manipulation library found in the zlib distribution.

fpng - Super fast C++ .PNG writer/reader

brotli - Brotli compression format

zlib

LZ4 - Extremely Fast Compression algorithm

uzlib - Radically unbloated DEFLATE/zlib/gzip compression/decompression library. Can decompress any gzip/zlib data, and offers simplified compressor which produces gzip-compatible output, while requiring much less resources (and providing less compression ratio of course).

bitter - Extract bits from a byte slice

CodeRabbit: AI Code Reviews for Developers
Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
coderabbit.ai
featured
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives
www.saashub.com
featured