Looking for a few websites regarding items and trading

Fellow players!

I am looking for a few specific websites for my cause: There used to be a website that allowed me to see extended info about any item in any inventory like exact wear, ID etc.

Then I am looking for a website besides tf2outpost where I can trade tf2 items for CS:GO items (if that even exists).

Last but not least, a proper trading side for CS:GO to CS:GO trades of any sort.

Thanks for your help!