Is GWT (google web toolkit) the same as google visualisation API?
I want to know is this example writen in GWT: http://almende.github.io/chap-links-library/js/timeline/examples/example15_mobile.html
becouse I know that GWT is almost "death" and I want to use anularJS framework in this example if possible...
no.
GWT is a development toolkit to build web applications in Java.
Google Visualisation API is a library to draw charts in your browser, available for both JavaScript and GWT.