Umbraco

ExpressionEngine is a versatile, free, and open-source content management system (CMS) that offers developers and content creators a flexible platform for building and managing websites. Known for its intuitive control panel and powerful templating system, ExpressionEngine allows for the creation of complex, content-rich websites without sacrificing performance. The CMS supports multiple sites from a single installation, custom fields for tailored content types, and a robust set of built-in security features. With its extensive add-on ecosystem and active community, ExpressionEngine can be adapted to a wide range of projects, from simple blogs to large-scale corporate websites and e-commerce platforms.

Strapi is an open-source headless CMS that revolutionizes the way developers build and manage APIs. Written in JavaScript, Strapi offers a powerful and flexible solution for creating content-rich applications. As a headless CMS, it separates the content management backend from the frontend presentation layer, allowing developers to use any frontend technology they prefer. Strapi provides a user-friendly admin panel for content editors, customizable content types, and built-in user and role management. Its plugin system and RESTful API make it highly extensible and adaptable to various project requirements. With features like internationalization, media management, and GraphQL support, Strapi is suitable for a wide range of applications, from small websites to large-scale, multi-platform projects.

A file-based content management system (CMS) that simplifies website and web application development by using text files for content management instead of a traditional database.

The Fastest Sites in the World Run on RebelMouse

Google Sites is a free, user-friendly website creation tool integrated with Google Workspace. It allows users to create simple websites for personal or team use, with easy collaboration and integration with other Google services.