HideMyFaceTime - Stop watching your own face during FaceTime calls.
Bulma - Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
ShareAccount - Share your account without giving out your password
Milligram - A minimalist CSS framework
Callio by Netguru - Never miss a call from your client or prospect
Lit CSS Framework - World's smallest responsive CSS framework (398 bytes!)