When starting Xubuntu on my laptop, a lot of applications start to run (taking a big part of my CPU and energy): TeamViewer, Skype and so on and so forth. I don't want to uninstall them. I just want that they run when I invoke them, nothing else and nothing more. There is something to manage this? How to prevent the startup of any program? I am looking for something like "System Configuration Utility" of Windows.
More then the other, what I would like to disable is TeamViewer.