eTripBuilder is an online travel agent for recreational and business travel planning and management, acting more as a web app than a website. With eTripBuilder, you can book your flights, hotels, car rentals, and make reservations for dinner and attractions.
What makes this trip planner different from the millions of others you’ve seen is that their interface offers beyond traditional services. This web app was developed with Google’s new Web Toolkit, is integrated with Google Maps and easily adaptable to other Google services. For instance, you can import your itinerary to your Google calendar, or any other calendar for that matter. Along with this you can also import this information to your mobile handheld or GPS device.
eTripBuilder.com In Their Own Words
eTripBuilder.com extends far beyond the conventional online travel agent to deliver a total travel planning and management experience.
eTripBuilder.com was developed as a web application that lets travelers book their hotels, flights, and car rentals, as well as make reservations at local restaurants and browse thousands of attractions. Travelers are able to print a copy of their itinerary or enjoy the valuable conveniences of exporting their itinerary to their GPS device, importing their itinerary to Google Calendar or other calendaring software, or accessing their itinerary via a mobile handheld. Developed using Google’s new Google Web Toolkit and integrated with Google Maps, eTripBuilder.com presents the user with a rich user interface that works more like a web application and less like a website.
Why eTripBuilder.com It Might Be A Killer
The interface for this trip planning site doesn’t look like much, but I actually found it incredibly useful while planning a trip to Washington D.C. Sure, I might have been able to find cheaper flights somewhere else, (and we have our own theories about where) though, I thought the importing and exporting to my mobile and calendar was pretty darn cool, and more importantly, useful.
Some Questions About eTripBuilder.com
Will they be able to survive, with so many trip planning sites that already have been in existence for years? 
