zlib

01 · Who’s behind it

Who runs zlib

zlib zlib.net

Wikidata: lossless compression library

Company

No imprint we could read

Online since

Not in the Internet Archive

Audience

Top 10K

02 · Privacy

What zlib tracks

What the homepage loads before you accept or decline cookies. A cookie banner should hold most of it back until you agree, and a tag manager can load more that we don’t see.

1. 01
   LZ4 lz4.org English No trackers

   LZ4 - Extremely fast compression

   Compression algorithm

   • Bootstrap
   • Fastly
   • Font Awesome
   • GitHub Pages
   • jQuery
   • OVHcloud DNS

   0 say LZ4 is a good alternative to zlib 0 say LZ4 isn’t a real alternative to zlib

   Comment

   Compare LZ4 with zlib →
   Very close
2. 02
   GZIP gzip.org Top 10K English No trackers

   The gzip home page

   file format

   • Apache HTTP Server

   0 say GZIP is a good alternative to zlib 0 say GZIP isn’t a real alternative to zlib

   Comment

   Compare GZIP with zlib →
   Very close
3. 03
   libpng.org Top 10K No trackers

   libpng.org: top level

   • nginx

   0 say libpng.org is a good alternative to zlib 0 say libpng.org isn’t a real alternative to zlib

   Comment

   Compare libpng.org with zlib →
   Very close
4. 04
   7-Zip 7-zip.org Top 10K No trackers

   7-Zip

   open-source file archiver and extractor

   • Google Workspace
   • nginx

   0 say 7-Zip is a good alternative to zlib 0 say 7-Zip isn’t a real alternative to zlib

   Comment

   Compare 7-Zip with zlib →
   Very close
5. 05
   ijg.org Top 10K No trackers

   Independent JPEG Group

   C programming language library for JPEG images, from IJG

   • Apache HTTP Server

   0 say ijg.org is a good alternative to zlib 0 say ijg.org isn’t a real alternative to zlib

   Comment

   Compare ijg.org with zlib →
   Very close
6. 06
   libjpeg-turbo libjpeg-turbo.org No trackers

   libjpeg-turbo | Main / libjpeg-turbo

   software library for processing JFIF images

   • Apache HTTP Server
   • Google Workspace
   • PHP

   0 say libjpeg-turbo is a good alternative to zlib 0 say libjpeg-turbo isn’t a real alternative to zlib

   Comment

   Compare libjpeg-turbo with zlib →
   Close
7. 07
   Sourceware sourceware.org English No trackers

   sourceware.org: Free software! Get your fresh hot free software!

   Sourceware free software

   • Google Search Console
   • nginx

   0 say Sourceware is a good alternative to zlib 0 say Sourceware isn’t a real alternative to zlib

   Comment

   Compare Sourceware with zlib →
   Close
8. 08
   curl curl.se Top 10K English No trackers

   curl

   command line tool and library for transferring data with URL syntax

   • Fastly
   • nginx

   0 say curl is a good alternative to zlib 0 say curl isn’t a real alternative to zlib

   Comment

   Compare curl with zlib →
   Close
9. 09
   graphicsmagick.org English No trackers

   GraphicsMagick Image Processing System

   GraphicsMagick is a robust collection of tools and libraries to read, write, and manipulate an image in any of the more popular image formats including GIF, JPEG, JPEG-2000, PNG, PDF, and WebP. With GraphicsMagick you can create GIFs dynamically making it suitable for Web applications. You can also resize, rotate, sharpen, color reduce, or add special effects to an image and save your completed work in the same or differing image format.

   • Apache HTTP Server

   0 say graphicsmagick.org is a good alternative to zlib 0 say graphicsmagick.org isn’t a real alternative to zlib

   Comment

   Compare graphicsmagick.org with zlib →
   Close
10. 10
    libvips.org English No trackers

    libvips

    A fast image processing library with low memory needs.

    • Fastly
    • GitHub Pages
    • GoDaddy DNS
    • Google Fonts

    0 say libvips.org is a good alternative to zlib 0 say libvips.org isn’t a real alternative to zlib

    Comment

    Compare libvips.org with zlib →
    Close
11. 11
    pugixml.org No trackers

    pugixml.org - Home

    • Cloudflare
    • Cloudflare DNS
    • Cloudflare Web Analytics
    • Fastly

    0 say pugixml.org is a good alternative to zlib 0 say pugixml.org isn’t a real alternative to zlib

    Comment

    Compare pugixml.org with zlib →
    Close
12. 12
    OpenJPEG openjpeg.org English 1 tracker

    OpenJPEG

    reference software of the JPEG 2000 image format

    • Fastly
    • GitHub Pages
    • Google Analytics
    • Microsoft 365

    0 say OpenJPEG is a good alternative to zlib 0 say OpenJPEG isn’t a real alternative to zlib

    Comment

    Compare OpenJPEG with zlib →
    Close
13. 13
    tcl-lang.org No trackers

    Tcl Developer Site

    scripting language

    • Cloudflare
    • Cloudflare DNS
    • Cloudflare Web Analytics

    0 say tcl-lang.org is a good alternative to zlib 0 say tcl-lang.org isn’t a real alternative to zlib

    Comment

    Compare tcl-lang.org with zlib →
    Close
14. 14
    PCRE pcre.org Top 10K English No trackers

    PCRE - Perl Compatible Regular Expressions

    The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5. PCRE has its own native API as well as a set of wrapper functions that correspond to the POSIX regular expression API.

    • nginx

    0 say PCRE is a good alternative to zlib 0 say PCRE isn’t a real alternative to zlib

    Comment

    Compare PCRE with zlib →
    Close
15. 15
    Swift swift.org English No trackers

    Swift Programming Language

    Swift is a general-purpose programming language built using a modern approach to safety, performance, and software design patterns.

    • Google Search Console

    0 say Swift is a good alternative to zlib 0 say Swift isn’t a real alternative to zlib

    Comment

    Compare Swift with zlib →
    Close
16. 16
    freetype.org Top 10K English No trackers

    The FreeType Project

    The FreeType Project: a free, high-quality and portable Font engine

    • Cloudflare
    • Cloudflare DNS
    • Google Search Console
    • PayPal

    0 say freetype.org is a good alternative to zlib 0 say freetype.org isn’t a real alternative to zlib

    Comment

    Compare freetype.org with zlib →
    Close
17. 17
    FreeTDS.org freetds.org Top 10K No trackers

    FreeTDS.org

    • Apache HTTP Server

    0 say FreeTDS.org is a good alternative to zlib 0 say FreeTDS.org isn’t a real alternative to zlib

    Comment

    Compare FreeTDS.org with zlib →
    Close
18. 18
    tcpdump tcpdump.org English No trackers

    Home | TCPDUMP & LIBPCAP

    Web site of Tcpdump and Libpcap

    • Apache HTTP Server
    • Zoho Mail

    0 say tcpdump is a good alternative to zlib 0 say tcpdump isn’t a real alternative to zlib

    Comment

    Compare tcpdump with zlib →
    Close
19. 19
    sqlite.org Top 10K No trackers

    SQLite Home Page

    serverless relational database management system (RDBMS)

    • Google Workspace

    0 say sqlite.org is a good alternative to zlib 0 say sqlite.org isn’t a real alternative to zlib

    Comment

    Compare sqlite.org with zlib →
    Close
20. 20
    ruby-lang.org No trackers

    Ruby Programming Language

    general-purpose programming language

    • Cloudflare DNS
    • Fastly
    • GitHub Pages
    • Google Workspace

    0 say ruby-lang.org is a good alternative to zlib 0 say ruby-lang.org isn’t a real alternative to zlib

    Comment

    Compare ruby-lang.org with zlib →
    Close

Closest first, by how much each site’s offer resembles zlib’s. Trackers are counted the same way as above. Highlighted technologies are ones zlib uses too. Votes and comments come from visitors and don’t change the order.

04 · History

No changes yet. Each new crawl is compared with the last one, and what zlib adds, drops or rewrites shows up here.

05 · Details

How we measure

Alternatives are matched by what sites actually offer, from their homepages, Wikidata and a summary by Claude, in any language. Trackers and the rest of the stack come from the homepage’s code and DNS records.