PostSharp Laos is a post-compiler, MSIL injecting, high level aspect oriented programming weaver. It looks amazing, and has been integrated with the .Net Enterprise Library 3.0 via the Enterprise Library Contribution project.
« Writing efficient user interfaces is the main maxim, here at Vimperator labs. We often follow the Vim way of doing things, but extend its principles when necessary.
Towards this end, we've created the liberator library for Mozilla based applications, to encapsulate as many of these generic principles as possible, and liberate developers from the tedium of reinventing the wheel. »