Question: Which is the right-click equivalent to `svn status` in [TortoiseSVN](http://tortoisesvn.tigris.org/)? TortoiseSVN is a Windows' GUI for Subversion.

Answer: 
You can see all local changes in "TortoiseSVN > Check for modifications". The "Check repository" button will also look for remote updates.

But you can do the same by opening the commit window - it's the same as long as you don't click on the commit button accidentally.
If you have the icon overlays turned on, you can just look at your working copy folder and the icons will give you much of this information.