Speccy is really good, it shows all sorts of info about your computer & OS. Even your Windows COA & install date. And gives a list services (running & non running). There's also a Device Tree, and which gives lots of info.
I used to use SIW (both the installed & portable versions), but awhile back I've noticed that at least one of my AV's (it was either MSE 2 or MBAM) warned me that I was being re-directed to a bad site. However, many users insists that the program is harmless. The portable version has been removed from the site, but the last time that I used my Portable Apps Flash Drive, it was an option to install.
Cat