You can download the current DEVELOPMENT version of Kayak here. Please note that Kayak has not been released yet and it will possibly be quite unstable.
You can clone the project using git:
$ git clone git://github.com/dschanoeh/KayakThe main releases of Kayak are on branch master. If you would like to test the unstable development version please checkout the develop branch.
To build Kayak you only need a working maven installation. All dependencies are downloaded during the build process To initiate the build move into the Kayak source folder and run
$ mvn clean package