On Ruby - Covers many aspects of Ruby; by Pat Eyler. Nick Sieger - Covers many aspects of Ruby, Rails, related topics. Ruby Inside - Covers many aspects: daily tips, news, code, fun. Zen and the Art of Ruby Programming - Covers Ruby, Rails, programming, news and tips for developers. By Antonio Cangiano, software engineer, technical evangelist, IBM. Juixe TechKnow - Covers programming topics, many involve Ruby, Rails, related items. Ruby Fleebie - Author goals: explain key Ruby concepts in his own words, understandably, entertaining, fun, not boring. Ruby and Rails - Tips on the language and Rails, for beginners and advanced users. By Marcos Ricardo. Giles Bowkett - Wide range of Ruby and programming topics; by author of over 10 open source projects. Rubyology - Provides podcast interviews of ruby core team developers and the language's users. Zigzo - Provides tips and tutorials based on the problems the author encounters. Wrobel, Lukasz - Offers several tutorials and news about the language and its libraries. Snakes, Gems & Coffee - Covers business and open source use of Ruby and Python vs. Java, Agile processes used with these languages; and sometimes RoR, Ajax, distributed teams, search engine optimizing, Web 2.0.