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

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.

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. ...

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.

A wrapper for Hypervisor.framework on macOS

Date arithmetic and calendar data from ICU

Ruby FFI bindings for Libidn2.

LibIdn FFI ruby binding