Synopse mORMot 1 ORM/SOA/MVC framework - Please upgrade to mORMot 2 !

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• Updated Nov 10, 2026
• Pascal

Fast In-Memory Data Compression Algorithm (header-only C/C++) 540+MB/s compress, 3000+MB/s decompress, ratio% better than LZ4, Snappy, and Zstd@--1

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• Updated Nov 11, 2026
• C++

Lossless compression C library built for ultra-fast decode. Faster than LZ4 (+30% to 90%+; best on ARM64), at a better ratio. Official Rust, Python, Node.js, Go and WASM bindings. Write-once/read-many, with optional seekable archives for O(1) random access.

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• Updated Nov 12, 2026
• C

C++ wrapper around minizip compression library

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• Updated Apr 22, 2024
• C++

The Minimal LZMA (minlzma) project aims to provide a minimalistic, cross-platform, highly commented, standards-compliant C library (minlzlib) for decompressing LZMA2-encapsulated compressed data in LZMA format within an XZ container, as can be generated with Python 3.6, 7-zip, and xzutils

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• Updated Jan 13, 2022
• C

An AFF4 C++ implementation.

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• Updated Mar 24, 2023
• C++

[Lib][Version 4.0.0][Functional] C++14 wrapper around minizip compression library

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• Updated Oct 31, 2026
• C++

Python package to compress numerical series & numpy arrays into strings

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• Updated Nov 7, 2022
• Python

WebGraph is a framework for graph compression.

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• Updated Apr 23, 2026
• Java

QPACK compression library for use with HTTP/3

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• Updated Oct 29, 2026
• C

Fastest lz4 compression library in Node.js, powered by napi-rs and lz4-flex.

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• Updated Sep 17, 2026
• JavaScript

Compression and archiver APIs for Kotlin Multiplatform.

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• Updated Oct 25, 2026
• Kotlin

Incremental asset delivery library

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• Updated Oct 6, 2025
• C

🔥 Image compression plugin based on tinypng

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• Updated Apr 11, 2025
• TypeScript

The Python implementation of the AFF4 standard.

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• Updated Oct 26, 2026
• Python

Assorted compression formats for the Sega Mega Drive

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• Updated Nov 6, 2026
• C++

Crystal bindings to the Zstandard (zstd) compression library

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• Updated May 14, 2024
• Crystal

The Best Open Source PDF Compression Engine

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• Updated Nov 11, 2026
• C++

tiny7z is a native C# SevenZip 7zip .7z file format archive reader/writer

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• Updated Oct 10, 2021
• C#

An Android Image compress library, reduce's the size of the image by 90% without losing any of its pixels.

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• Updated Apr 12, 2023
• Kotlin