Unicode Character table is a nifty little tool to find the Unicode numbers and HTML-code of any character. It comes with an easy-to-use search function and some other goodies, such as font selection (Arial, Courier New, Helvetica, Tahoma, Times New Roman, Verdana), Symbols for Facebook and language support for German, Russian and Thai.
I could not work on my Mac without Alfred App. With v2 more powerful than ever I started looking for some workflows to make my life more convenient. This German/English Translation Workflow using http://dict.leo.org/ — the best German/English dictionary on the web — will give you translation search results right in Alfred. Get it here: https://github.com/psistorm/alfredapp.
Think of it as Mac Spotlight supercharged. I could not live without this amazing little helper.
Version 2 it out today. Get it at http://www.alfredapp.com/
Then make sure to get some great extensions from @jdfwarrior at http://dferg.us/
Photoshop Etiquette is a handy reference guide for not incurring the wrath of other designers that have to work with your files.