A cheaper statistics library.

super fast qrcode generator

Wrapper of chunkio

Support to search subimages for ChunkyPNG - fast with ruby extension

Custom ICU rulesets for collation in ruby - requires libicu

interface to the rdkafka C library

Native Ruby extension for running clamav scans

Ruby bindings for clang C API

Collect statistics about Class and Modules.

A Ruby wrapper for the SKIP2 REST APIs

C binding for cmetric library.

CNifti is a wrapper for the standard C NIfTI 1 library found at http://afni.nimh.nih.gov/pub/dist/src/nifti/

A ruby library that wraps libcogito

Extract dominant colors from images using native extension implemented in Rust.

Currently contains four options (ciede 76, cmclc, ciede94, and ciede2000) (all here: https://en.wikipedia.org/wiki/Color_difference), all weighted so that the distance between rgb 0,0,0 and rgb 255,255,255 will be 1.000 (accurate to 4 decimal places). Will add more. All are my own implementations...

Ruby bindings for Google's Compact Encoding Detection C++ library

Compix for oilypng

This is a Captcha gem for Rails Applications. It drawing captcha image with C code so it no dependencies.

Provides a class (CongruenceSolver) for finding the modular zeros of a polynomial (given the coefficients and modulus) and a binary (csolve) to to solve your congruences at the command line.

A string hash function that returns the same value each time it's called.