Is there a way to find all accounts accessed on my Windows XP computer, from social sites to eMail accounts?
Possible with keyloggers?
yep, that will give you login details as well :-)
do you want to track down who is using what accounts on your computer?
If that's the case, you should check your browser history. It won't tell you the user name someone used to log into a site, but it will tell you which pages were visited. What browser are you using?
Or do you want to find all the accounts you ever opened?
If that's what you're looking for, check out the following question: How can I find all the websites that I have joined?