Mattrbld vs Outstatic

Mattrbld is a Git-based headless CMS for creating and managing content without tying editors to a particular frontend framework. Content remains in Git repositories rather than on Mattrbld’s external servers. After importing a project, users can edit offline, but must reconnect to publish changes. Schemas define content fields and validation rules, which Mattrbld uses to create editing forms. It supports JSON and Markdown files with YAML frontmatter; plain YAML support is planned but not implemented. Developers can implement a preview route using Mattrbld’s protocol to show content updates in real time. Repository communication uses Git; its documentation names GitLab, GitHub, and Bitbucket as providers that require a CORS proxy. Mattrbld does not require its own account, but collaborators need Git-provider accounts to access private repositories or sync. It is free, with an official hosted instance and a self-hosted core. The hosted instance has no availability guarantee, and its provided CORS proxy is intended for small-scale private projects. Mattrbld can also be built from source and hosted as a single-page application.

Outstatic is a Markdown-focused content management system for websites. Its editor works with Markdown and MDX files in GitHub repositories, where content is stored without a separate database or server. Content is arranged into Collections, Documents, and Singletons; Singletons can hold unique items such as a homepage or site settings. The editor lists custom fields and AI completion. The homepage names support for Docsify, VuePress, MkDocs, SvelteKit, Next.js, Hugo, Docusaurus, Nuxt, Astro, Hexo, Eleventy, VitePress, Zola, Nextra, Fumadocs, Markdoc, and Contentlayer. Outstatic supports self-hosting and a hosted PRO dashboard. GitHub login is documented through OAuth applications or GitHub Apps; PRO adds Google and email sign-in. A PRO project API key can bring AI completion, member management, added login options, automatic content setup, and a managed GitHub relay to a self-hosted instance. The free plan is free; PRO is $9.99 a month, billed $9.99/user/mo. Eligible new PRO subscriptions include a 14-day trial.