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Zlib-ng Alternatives
Similar projects and alternatives to zlib-ng
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dolphin
Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.
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Skia
Skia is a complete 2D graphic library for drawing Text, Geometries, and Images. See documentation for contribution instructions.
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Bullet
Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.
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NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better zlib-ng alternative or higher similarity.
zlib-ng discussion
zlib-ng reviews and mentions
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 2025-03-16.
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Zlib-rs is faster than C
I'm not sure why people say this about certain languages (it is sometimes said about Haskell, as well).
The code has a C style to it, but that doesn't mean it wasn't actually written in Rust -- Rust deliberately has features to support writing this kind of code, in concert with safer, stricter code. This isn't bad, it's good. Imagine if we applied this standard to C code. "Zlib-NG is basically written in assembler, not C..." https://github.com/zlib-ng/zlib-ng/blob/50e9ca06e29867a9014e...
- zlib-ng: zlib replacement with optimizations for "next generation" systems
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Fast-PNG: PNG image decoder and encoder
Looks like it depends on https://github.com/nodeca/pako for the zlib compression.
> Almost as fast in modern JS engines as C implementation (see benchmarks).
Impressive, although zlib itself is no longer the bar to beat for zlib, I think that goes to https://github.com/zlib-ng/zlib-ng these days
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Discord Reduced WebSocket Traffic by 40%
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
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Show HN: Pzip- blazing fast concurrent zip archiver and extractor
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
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Introducing zune-inflate: The fastest Rust implementation of gzip/Zlib/DEFLATE
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.
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Zlib Critical Vulnerability
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.
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Git’s database internals II: commit history queries
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
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Computing Adler32 Checksums at 41 GB/s
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.
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Stats
Basic zlib-ng repo stats
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3 days ago
zlib-ng/zlib-ng is an open source project licensed under zlib License which is an OSI approved license.
The primary programming language of zlib-ng is C.
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