This Smashing Magzine post called 50 Powerful Time-Savers For Web Designers is filled with amazing tools that I have never heard of. Take the Browser UI tool for example. It creates a browser window around any size Photoshop document you can throw at it. The Browser UI is easily installed and helps you get around with your Photoshop documents.
House of Buttons is a growing collection of various buttons spotted in the wild by Jason Long. Incredibly useful collection, and submissions are welcome.
PDFsam is a free open source tool (GPL License) designed to split and merge PDF documents. Whether it be only extracting sections into a single document or changing the order of the pages. The basic version can be downloaded and simply used on every platform with a Java support.
Typographic Sins (also available as PDF) by James Godfrey and Patrick Wilkey covers 35 mistakes commonly made by novice designers. The website puts them in a neat orderly list, but the PDF showcases them visually. It’s a great reference guide and learning tool if you want to learn better typography design.
Is email a distraction? SelfControl is an OS X application which blocks access to incoming and/or outgoing mail servers and websites for a predetermined period of time.
Check out the entire list of 50 Powerful Time-Savers For Web Designers.
(How excited are we here over at Team TeuxDeux for our app being one of them? *Sooo* excited!)