windowfarms.com – is the website of a Kickstarter project that helps people build or buy hanging planter boxes for their windows to grow fresh herbs and produce.
snapsort.com – a really nice and clean site to help compare cameras before your next purchase.
damsonaudio.com – super cool portable speaker design
compass-style.org – an open-source CSS Authoring Framework, needs Ruby installed. Or just download Scout which runs Sass and Compass in a self-contained Ruby environment.