Without knowing the names of the programs or if you have installed them it's hard to say, but the first place I would check is /usr/bin . Just open a terminal, then "cd /usr/bin" then "ls | less"(that's the backslash\ key+shift), then use the page down or page up buttons to find the program. If they are already installed you should find them there. It sounds like they have not been added to the menu of whatever desktop you are using. You could use a menu editor to add them, or just start them from the command line, usually just typing the name will work, if it doesn't try the whole path, example "/usr/bin/thisprogramname" will start it. Let me know if this worked or not.
Best of luck
David
P.S. Adding more info in your post will help others help you faster.