Here is a quick tutorial to get up and running in ruby on rails with the Gmail Contacts API.

Translates words or phrases from one language to another, using tranexp website

For small applications, a database can be overkill for storing your data in a consistent and organized manner. Therefore, Stone was built to provide plug-and-play data persistence for any application or framework. It is fast, and it is easy and good.

Top 10 Mistakes when building Flex Applications

Welcome to the Slapp tutorial. The primary goal here is to gently introduce the major components of the Merb micro-framework by building a simple chat wall style application.

7 soon to be released Ruby and Rails books and more in comments