Apostrophe vs Obsidian Publish

Apostrophe CMS is an open-source Node.js content management system built for developers and content editors. It provides in-context editing, a modular widget system, and a structured content architecture built on MongoDB.

Obsidian Publish is Hosting service that publishes Obsidian vaults as websites with graph view, search, and custom domains.. It is available under a paid model. This tool falls under the cms category.