Sitepins
Sitepins is an open-source, Git-based headless CMS that lets non-technical users and AI-site builders manage content through a visual editor, version-controlled in their own GitHub or GitLab repo. It works with static site generators like Astro, Next.js, and Hugo.
Sitepins offers a user-friendly editor with live collaborative editing and a live preview system that shows a build preview of the page. Content can be saved locally without triggering a rebuild. It also supports iframe previews, nested collections, shortcodes, and custom content blocks, plus native 12-language support. Users bring their own API key from OpenAI, Anthropic, Google Gemini, or xAI for content generation and rewriting.
It's available as a free self-hosted option under the AGPLv3.0 license, or as a managed Sitepins Cloud subscription.
Follow updates via Discord, X, and the Sitepins Blog.
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ContioReach
ContioReach is a headless CMS built specifically for blogs, with built-in SEO, sitemap-aware internal linking and instant revalidation for Next.js, Astro and Nuxt.
Content and SEO teams write, optimize and publish in one dashboard. Developers pull posts into any frontend through a simple REST API, and a publish webhook updates the live site instantly, so publishing never waits on a developer.
Posts, authors, categories, tags and SEO fields work out of the box, with no content modeling like Contentful or Sanity require.
Built in: SEO and GEO guidance for Google and AI answers, internal link suggestions across your whole site, scheduled publishing, a keyword planner, indexing checks and Search Console analytics. Agencies run every client blog from one login with separate workspaces.
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Squarespace
Squarespace is an all-in-one website builder and content management platform that helps users create professional websites without needing to code. It offers customizable templates, AI website building tools, hosting, domain registration, analytics, and design controls in one subscription. Businesses can use Squarespace to build websites, portfolios, blogs, online stores, service pages, and branded digital experiences. The platform also includes tools for ecommerce, appointment scheduling, payments, invoicing, email marketing, SEO, and social media connections. Squarespace supports secure online selling through features such as checkout, product pages, commerce analytics, and Squarespace Payments. With professional design templates and built-in business tools, Squarespace helps individuals and companies launch, manage, and grow their online presence from one platform.
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Contentstack
Contentstack is the pioneer of the Agentic Experience Platform (AXP), a unified system that brings together structured content, real-time customer data, and AI-driven automation. By connecting its composable Content Cloud, Data Cloud, and Agent OS, Contentstack helps enterprises reduce operational debt, automate digital workflows, and deliver personalized, adaptive experiences at scale. Unlike legacy monoliths or fragmented headless tools, Contentstack's agentic ecosystem turns real-time customer intent into immediate action, making it a powerful foundation for modern composable commerce.
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