Hello, I’ve started a new Ruby Gem of the Week series (w/ web feed) that presents a new Ruby library every week on Thursday on Planet Ruby. So far the gems presented include: Week #3 - slideshow gem - a free web alternative to PowerPoint and Keynote in Ruby; Week #2 - hoe gem - build, package and publish gems with hoe rake tasks; Week #1 - factbook gem - turn the world factbook into open structured data e.g JSON – Happy Planet. Cheers. PS: Have your say! Guest posts more than welcome.