Fence ist eine Implementierung des Atom Publishing Protocol für OS X, vorerst zugeschnitten auf TypePad. Nick Gerakines beschreibt es auf der Atom-Syntax Liste so:
Fence is a small application that was originally a proof-of-concept learning project to interact with the TypePad Atom API but has become a full project. It is written in cocoa/objective-c (my first cocoa app) and uses a home grown Atom framework resembling the perl module XML::Atom… The Atom cocoa framework can interact with any Atom API friendly website so its not just TypePad specific [Re: What Atom software are you working on?].