CharLS is a C++ implementation of the JPEG-LS standard for lossless and
near-lossless image compression and decompression. JPEG-LS is a low-complexity
image compression standard that matches JPEG 2000 compression ratios.

Features:
- C++14 library implementation with a binary C interface for maximum
  interoperability.
- Supports Windows, Linux and Solaris in 32 bit and 64 bit.
- Includes an adapter assembly for .NET based languages.
- Excellent compression and decompression performance.

WWW: https://github.com/team-charls/charls