I want to know what is done with my computer in my absence. If any tool/application plea suggested me.
a keylogger, cookies are easily wiped with tools such as ccleaner
Put It In A Safe
i know someone who used a keylogger (on home computer) cause they suspected there g/f was cheating on them with someone online and it worked.keylogger or something similar should work.google could probably give you a list of ways.
You can look at your cookies or temporary internet files and see what they have been doing.