Obie Fernandez is the CTO/Founder of HashRocket, a boutique web consultancy and product shop headquartered in Jacksonville Beach, Florida. Obie has a well-read blog and speaks at conferences and technical user groups on a regular basis. He is also a series editor and book author for Addison-Wesley.

Geoffrey Grosenbach has been one of the premiere Rails bloggers since 2005 with articles covering the intersection of graphic design and website development. He co-authored "Deploying Rails Applications" and is the founder of PeepCode Screencasts.

The Softies on Rails are Brian Eng and Jeff Cohen, two former Microsoft Certified Professionals who discovered the joy of developing web applications with Rails in 2005 and have never looked back. Softies on Rails takes a unique look at Ruby and Rails development for those coming from a Microsoft background.

Jamis Buck has been blogging about Ruby and Rails since 2005, focusing on elegance and opinions in software design. He is the author several well-known open-source Ruby libraries and applications, including the popular remote-automation utility, Capistrano.