Epos is an opinionated engine for building Chromium browser extensions with React. While frameworks like WXT and Plasmo prioritize flexibility, Epos focuses on a zero-config experience with powerful features that work out of the box. At a high level, Epos gives you: - A cross-context messaging system - Shared state with persistence and sync - Storage for files and data - Extension APIs available in any context - Automatic script injection + Shadow DOM - A simpler setup through epos.json