ruby linear algebra library

Example lifted from the standard library docs. Illustrative!

Harmonium is a Ruby implementation of the Chord distributed.

A powerful Ruby-based Relational Algebra query-building language,

Barcode .net library component for linear and 2D barcode on form and asp.net

Net::DNS is a pure-Ruby DNS library,

SMSer is a Ruby library which allows you to send SMS messages to any cellphone.

A library of data mining algorithms for Ruby.