If you are looking for a way to show a login window in a Eclipse RAP client, this is one of ways it could be done: 1. create a new perspective (LoginPerspective). 2. add the login view to this perspective, something like: @Override public void createInitialLayout(IPageLayout layout) { String editorArea = layout.getEditorArea(); layout.setEditorAreaVisible(false); layout.addStandaloneView(LoginView.ID, false, [...]