The writer who built his own editor

The Magic Pages Podcast · Oct 15, 2026 · 50m

Justin Cox has written online since the late 90s, co-founded The Writing Cooperative on Medium, and has owned JustinCox.com for more than twenty years. Every Wednesday his Write Now series features another author's writing process. It started with a cold email to Andy Weir and has reached almost 300 authors since. Those interviews became his book, Write Now, whose advice included a line Justin has since taken back: find a writing app that's good enough and stick with it.

Earlier this year Justin set out to test whether AI really makes software-as-a-service obsolete, and built the writing app…