Yehuda Katz is a member of the Ember.js, Ruby on Rails and jQuery Core Teams; he spends his daytime hours at the startup he founded, Tilde Inc.. Yehuda is co-author of best-selling jQuery in Action and Rails 3 in Action. He spends most of his time hacking on open source—his main projects, like Thor, Handlebars and Janus—or traveling the world doing evangelism work. He can be found on Twitter as @wycats and on Github.


This is the personal site of Yehuda Katz (wycats AT gmail DOT com).

I work for Engine Yard, an expert hosting and open source development company, where my responsibilities include working on the Merb ruby web framework.

I previously worked for Procore Technologies, which produces a construction project management tool written in Ruby on Rails. It allows desktop integration with Microsoft Project and Suretrak, and is probably one of the most expansive Rails projects around. It also uses jQuery extensively, making it the largest Rails project around to integrate jQuery.

I am a committer on the jQuery project, a member of the jQuery Plugins Team, Editor of Visual jQuery Magazine, and the maintainer of Visual jQuery, the slick, easy UI for the jQuery API.

My current Open Source work includes, but is not necessarily limited to, development of the Merb, Rubinius, and DataMapper projects.

I have just completed my first book, jQuery in Action, along with my co-author Bear Bibeault. It can be purchased from Manning Publications or on

Additionally, I have just completed working as a Contributing Author on Ruby in Practice, and am jumping into my second book, Merb in Action.

I’d love to meet those of you I haven’t already met. My 2008 conference schedule:

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