Squidex is an open-source headless CMS and content management hub that delivers structured content via a powerful API to websites, mobile apps, and any client.

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🚀 Overview

Squidex is a flexible, API-first headless CMS designed for modern content management needs. Unlike traditional CMS platforms, it decouples content creation from presentation, allowing developers to fetch and display content via REST/GraphQL APIs with OData support anywhere.

It solves the problem of fragmented content management across multiple channels by providing a centralized platform that's scalable, secure, and extensible. Squidex is built for developers seeking a customizable backend and non-technical editors who need an intuitive UI for content workflows, assets, and schemas.

Created by Sebastian Stehle in 2017 as an open-source alternative to expensive SaaS CMS like Contentful, it emphasizes high-quality code, MIT license, and enterprise-grade features like clustering and GDPR compliance to meet demands of large teams and corporations.

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✨ Key Features

• Rich API: GraphQL, REST with OData filtering, Swagger docs—query content efficiently without custom backends.
• Multi-Database Support: Works with MongoDB, PostgreSQL, MySQL, SQL Server for flexible deployments.
• Admin UI & Extensibility: Intuitive interface for schemas, assets, workflows; easily add custom fields, rules (e.g., webhooks, emails), and editors.
• Asset Management: Handles images/videos with metadata extraction, CDN integration.
• Clustering & Performance: High-availability setups, fast production performance.
• Upcoming: Enhanced cloud features, more integrations.

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🛠 Tech Stack

• Frontend: TypeScript, SCSS, HTML, JavaScript (Angular-based admin UI)
• Backend: ASP.NET Core, C#, CQRS architecture
• Database: MongoDB, PostgreSQL, MySQL, SQL Server
• Auth: Built-in with OIDC support
• Hosting: Docker, Kubernetes, Azure, AWS, GCP, self-hosted or Squidex Cloud

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👥 Who Is This For?

This project is useful for:

• Developers who want to build custom UIs on a robust headless CMS backend
• Teams looking for scalable content management without vendor lock-in
• Indie makers building apps, sites, or IoT solutions needing structured data

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📸 Screenshots / Demo

• Live demo: https://cloud.squidex.io (free signup)
• GitHub: https://github.com/Squidex/squidex

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🔥 Project Status

• 🟢 Actively building

Last updated: 2026-03-24

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❓ FAQ

Is this project free?

Freemium — Open source self-hosting is completely free (MIT). Cloud SaaS starts with a free Starter plan (20k API calls, 500MB storage), paid plans from €19/mo.

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Is the source code available?

Yes — https://github.com/Squidex/squidex (MIT license, 6k+ commits, latest release 7.21.0)

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Can I contribute?

Yes, create issues for bugs/features, submit PRs—community welcomes contributions; see docs and forum at https://support.squidex.io.

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📬 Contact & Links

• Website: https://squidex.io
• GitHub: https://github.com/Squidex/squidex
• Twitter/X: https://x.com/squidexcms
• Email: hello@squidex.io

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