You can hold ⌥ (Option) to make windows resize symmetrically, from the center. It even works when resizing from any corner in Lion. Update: You can also hold ⇧ (Shift) to resize a window proportionally.

As far as I can tell this is brand new in Lion, the first version of OS X that allowed resizing windows from any side.

Thanks to Kelly and Sören Nils Kuklau for help with this post.

You May Also Like

Ivory for Mastodon 2.0 is out. Go get it

A great app for great social media gets a couple big hitting new features and a bunch of QoL improvements.

Speedrunning appreciation for indie apps

One big shoutout to a bunch of apps I use on at least some kind of regular basis.