Automatically reloads your Goliath app on file change using Guard.

Guruby is a Ruby interface to the Gurobi solver

Graphviz for Ruby, using libgvc via FFI

Ruby binding for convenient data-object sharing library - Hakuban.

Haltia.AI Software Development Kit (SDK) for Ruby

Complete Ruby bindings for HarfBuzz using FFI. Covers Core API, OpenType Layout, Variable Fonts, AAT, Subset API, and more.

A ruby wrapper to the HDF5 data library. Currently can only read HDF5 files.

The implementation of Bitcoin hierarchical deterministic key for Ruby.

Herms-beacon scans for any available altbeacons/ibeacons

Highwayhash Ruby C Extension

Client for accessing the Hive blockchain.

A Ruby library for writing GUI applications

Hoop Agent library

Hoptoad Notifier extension making hoptoad client speak to server via 0MQ socket.

A gem that allows you to add date only, time only and datetime pickers to your forms. This gem also takes into account the way Ruby doesn't parse certain American-friendly dates so it passes along hidden fields with the values expected by rails. When updating the values they are 'localized' using the locale file to get them into the format expected by the picker.

HTSlib bindings for Ruby

A library for parsing and comparing human names. Wraps the Rust crate `human_name`.

hwloc ruby bindings for versions 1.10 onward

Hyperdex client bindings

Hyperquest allows you to do an unlimited amount of HEAD or GET requests via a native extension.