Anti-Error and GeekBuddy are part of the free trial programs which come bundled with CIS. You could have avoided installing them by clicking on the option to "Customize Installer" during installation. It's hidden, and I wish is was more obvious, but those programs can easily be removed by going to Add/Remove.
As for Shared Space and the virtualization shortcut, those are part of CIS. For more information, and my advice about how to configure it, please see the article I have written here
Please let me know if you have any other questions.