Notepad: Is just a little notepad on the side, like auction house you can write stuff in it so you can remember like...
~Stuff you need to buy for later to prep
~Loans you owe, how much/when you took it/when it's due
~What stuff your looking to buy, sparks,gear etc. (trade post so you don't lose it)
~What reps you need to work on

What i'm trying to say is you can quickly just click the notepad and see what you need to do, like a schedule or a reminder in game.

Translator: Is just like google translate but quicker and easier, if you don't speak a certain language and someone is trying to communicate with you in that language, you can copy and paste what he/she said and paste it in the translator on DE and it can show you what it means in the language you want it to, it will be quicker and save lots of time if you don't speak the language. It can be placed around the auction house/professions etc. circles.