Haven't seen Urbanspoon b4, but a quick look suggests a database (and possibly RSS) driven site. In which case, you'll need a server technology like php/MySQL (or Java or ASP/MSSQL).

In order to test your php (I assume you'll be using this), you'll need an Apache web server, pHp and MySQL. A quick download from XAMPP should set up these on your computer (all platforms supported). Other combo download providers exist, but XAMPP is the one I use. MySQL can be accessed from the command line, but I hate all that messing about. I use the community version of SQLyog from Webyog as a graphical interface to administer my databases. Navicat is a great commercial alternative.

Your pHp coding needs an IDE. I use Aptana from time to time and is a great free tool.
However, I use Dreamweaver for day to day stuff - v.expensive if you're not serious about web design/development. There are a number of good IDEs out there by now.

Obviously you'll need hosting (pHp/MySQL ready).

Search for free scripts and apps like site searching, XML parsing etc.

Thanks for the info... I will look through online. I use Dreamweaver now but have not really looked into anything it offers in depth like Coldfusion. Could that be another possible tool I could use?

Not unless you want to pay licensing fees. Coldfusion isn't free and open like PHP

dreamweaver is one of the simplest software. try to explore it.

As per my experience dreamweaver is good to use....since I'm using it long time.