Programs on my work computer?

So someone else was sitting at my desk yesterday at work. He seems to have installed a bunch of add ons and what not to the computer.

I've been trying to remove them all morning but there are a few things on here that I'm not sure about. I don't want to delete anything important. if you have any info on these programs let me know if they are legitimate, important, or malicious:

Log me in - logmein inc

Less tabs - lesstabs

join.me - joinme.inc

Camtasia studio 7 - techsmith corporation

Optimizer pro v 3.1 - strongvault

playready PC run time - Microsoft

If worst comes to worst I will have the tech people look at it. I'd rather not, tho, because it isn't necessary to get the kid in trouble. they could use this as an excuse to repel our internet rights. I'd rather handle it myself.