*[Graphical user interfaces](#graphical-user-interfaces)
*[Graphics Programming](#graphics-programming)
*[Hadoop](#hadoop)
...
...
@@ -875,13 +877,22 @@
*[The Go Tutorial](http://golang.org/doc/go_tutorial.html)
###Gradle
*[Building and Testing with Gradle](http://www.gradleware.com/registered-access?content=books%2Fbuilding-and-testing%2F)
###Groovy
####Gradle
*[Gradle User Guide](http://www.gradle.org/docs/current/userguide/userguide.html)([PDF](http://www.gradle.org/docs/current/userguide/userguide.pdf)) - Hans Dockter, Adam Murdoch
*[Building Java Projects with Gradle](http://spring.io/guides/gs/gradle/)
*[Building and Testing with Gradle](http://www.gradleware.com/registered-access?content=books%2Fbuilding-and-testing%2F)
###Grails
####Grails
*[The Grails Framework - Reference Documentation](http://grails.org/doc/latest/)([PDF](http://grails.org/doc/latest/guide/single.pdf)) - Graeme Rocher, Peter Ledbrook, Marc Palmer, Jeff Brown, Luke Daley, Burt Beckwith, Lari Hotari
*[Grails Tutorial for Beginners](http://grails.asia/grails-tutorial-for-beginners/) - GRAILS COOKBOOK
*[Getting Started with Grails](http://www.infoq.com/minibooks/grails-getting-started)
####Spock Framework
*[Spock Framework Reference Documentation](http://spock-framework.readthedocs.org/en/latest/) - Peter Niederwieser
*[Spock Intro](http://edgibbs.com/spock-intro-a-bdd-testing-framework-in-groovy/) - Ed Gibbs
###Hadoop
*[Hadoop Illuminated](http://hadoopilluminated.com/book.php) - Mark Kerzner & Sujee Maniyam
