want to see shortcuts for applications, sites, add-ons...like in Google Chrome

No idea what you are talking about, but I do have Google Chrome, so if you tell me what to do in Google Chrome to see what you are talking and perhaps the url if one is shown as well. Sounds like you may be referring to something through Google Chrome extension though.

I don't know if keyword shortcut is any part of the that, you mention shortcuts.

Firefox and other Browser Keyboard Shortcuts (Comparison Table) http://dmcritchie.mvps.org/firefox/keyboard.htm

Th only keyword shortcuts I think Google has are for search engines.

When you visit Google store and find applications you want and install them, then all apllication are shown like litle icons when you open new tab. https://chrome.google.com/webstore?hl=sr