As part of an attempt to diversify my income I made several Unity plugins and scripts, Easy Screen Align is the second and most popular one accruing thousands of downloads.

'Easy Screen Align' does what its title suggests. It's a simple script for aligning elements to the screen.

Its popularity is in no doubt directly related to its free nature, which was done as both a promotional tactic and gift to the community.

2D/3D Demonstration
Unity Example Game UI Demo
Unity Editor UI