Atticus

Atticus is a US-based browser-based writing and formatting tool designed to compete with Vellum (Mac-only) by offering comparable interior design quality on any device. Authors can write, edit, and format their manuscript inside Atticus and export publish-ready ebook and print files for KDP, IngramSpark, and other platforms. Atticus offers a one-time purchase price rather than a subscription, which represents strong long-term value for prolific self-publishing authors. It is widely considered the best Vellum alternative for Windows users and is well regarded across the indie fiction community.