webmark.ing/url/dogood.ajc.com

By Mike Fruchter of MichaelFruchter.com (Twitter/FriendFeed)Google App Engine, which was released in April 2008, is a platform for building, hosting and scaling web applications using Google's infrastructure. It allows a developer to build and test web applications without the worry of maintaining servers, and so forth. It's pretty much a plug and play type of solution, just upload your application, and it's ready to serve your users. A lot of these applications are very raw and are just test beds for the developers. There are quite a few that are useful and have some potential. This post highlights 15 of them.1) Down or NotThis is a simple utility that will tell you if a website is online or offline. This site also displays a tag cloud of the last 100 or so websites that have been queried for their uptime.2) Check Google PagerankThis will allow you to check your website's Google Pagerank. What's also great about this utility is the ability to check Pagerank for up to 100 domains per t