There are many ways to organize files in folders within Finder, but possibly one of the handiest is to sort files by the application that will open them. AppleInsider shows how to enable this ...

Once you’ve organized files into groups with Arrange By, hold down the Option key and Control-click in the Finder window again. The Arrange By option in the contextual menu changes to Sort By.

Lion Finder offers three different ways to organize your folders: Arrange By, Sort By, and Clean Up By. What does each option do? Can you combine them? Kirk McElhearn explains.

Sorting is one of Microsoft Excel's easiest tasks. Click; you're done! At least until you need to sort by multiple columns. For this sort task, you'll need a custom sort. Here's how.