This can be done in a number of ways by yourself. The easiest and simplest way is to create simple scripts that are simply a list of programs to run.
If you don't have a directory named "bin" in your home directory, you would want to create one, as this is a default place for such things; from a terminal command, enter from your default home directory:
mkdir bin. Then, enter "cd bin" to change to that directory. Run an editor such as gedit in that directory, with a name such as
In the editor enter something like this:
xdg-open http://netlog.com &
When done, close the editor, and make the file executable, by entering
chmod +x socialapps.sh.
Run the script by using alt-f2, and entering the full name. Then, you may be able to pin it to the launcher, or create a keyboard shortcut.
To close the apps, you would create another similar script, but call it something like "closesocial.sh", and enter commands like this:
pkill empathy &
pkill thunderbird &
For the URL, you'd need to pkill the browser, and I'm not sure how well it will work, especially if you have other browser windows.
There may be more elegant ways to do this, but this should work until you find something better, if you really want it.