The front end should never dictate how your content is shaped. Squidex is an open-source headless CMS that stores content once and delivers it to any website, app, or service through REST, OData, and GraphQL APIs, so teams design schemas around their domain instead of around a theme. Editors work in a clean management UI: define schemas with validation and localisation, write content with references and components, manage images and files with resizing built in, and move drafts through custom workflows that say who creates, reviews, and publishes. Nothing waits on a developer for routine changes, and nothing ships unreviewed in organisations that need approval chains. Rules react to every content event, pushing fresh posts to syndication partners, notifying search indexes, invalidating caches, or calling your own webhooks; backups, versioning with diff-style history, and role-based permissions keep an auditable operation. Multiple projects live in one installation, clients authenticate API consumers, and content plugs into static-site generators, storefronts, and mobile apps from one hub. Because you run it yourself, the database options span MongoDB and several SQL servers, and the API your applications depend on answers from infrastructure you control with no per-seat tax on editors. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.