The Appendix was founded where Austin, TX; Lima, Peru; Philadephia, PA; and São Paulo, Brasil meet the Internet in the Summer of 2012.

Body text is set in FF Quadraat by Fred Smeijers. Interface text is set in FF Enzo by Tobias Kvant.

The logo for The Appendix was designed by Ben Breen.

The icons for supernotes are from the Pictos collection by Drew Wilson; the social media icons in the footer were adapted from the iconmonstr collection from Alexander Kahlkopf; and the Hot Air Balloon by Matteo Manenti is used under the Creative Commons – Attribution (CC BY 3.0) license from The Noun Project.