Rails 3 support now! Simple Captcha is the simplest and a robust captcha plugin. Its implementation requires adding up a single line in views and in controllers/models.
Public repository record indexed from GitHub. Explore verified star velocity metrics, source code repositories, and curated developer tool directories across the GitHubRepo ecosystem.
xlsx generation with charts, images, automated column width, customizable styles and full schema validation. Axlsx excels at helping you generate beautiful Office Open XML Spreadsheet documents without having to understand the entire ECMA specification. Check out the README for some examples of how easy it is. Best of all, you can validate your xlsx file before serialization so you know for sure that anything generated is going to load on your client's machine.
Generates ODF files, given a template (.odt) and data, replacing tags
An easy and unobtrusive way to use jQuery's autocomplete with Rails 3
Tasty SQL for Clojure.