I’ve already written about LaunchCodes, a simple app which re-enables Leopard’s file opening behavior in newer versions of Mac OS X; it allows Snow Leopard to open files using the application which created them. Magic Launch is a different implementation of the same basic idea. Michel Fortin explains some of the differences between the two applications.
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If you liked this, you'll love my book. It's called Designed for Use: Create Usable Interfaces for Applications and the Web. In it, I cover the whole design process, from user research and sketching to usability tests and A/B testing. But I don't just explain techniques, I also talk about concepts like discoverability, when and how to use animations, what we can learn from video games, and much more.
You can find out more about it (and order it directly, printed or as a DRM-free ebook) on the Pragmatic Programmers website. A Chinese translation is available from Amazon.cn.
