http://www.fraiseapp.com/index.php

What is Fraise? …

Fraise is a free text editor for Mac OS X Leopard 10.6 which is both easy to use and powerful. It is designed to neither confuse newcomers nor disappoint advanced users. It should work perfectly for a whole variety of needs – like web programming, script editing, making a to do list and so on..

Fraise has all open documents in a list with beautiful Quick Look icons to your left just like e.g. iTunes so you can easily switch between many documents – you can also choose to display them as tabs if you prefer it that way.