Umbraco is described as 'fully-featured open source content management system with the flexibility to run anything from small campaign or brochure sites right through to complex applications for Fortune 500's and some of the largest media sites in the world' and is a CMS Tool in the Social & Communications category. There are more than 100 alternatives to Umbraco for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Windows, Linux and Mac. Most alternatives are CMS , Blog Publishing Tools and Website Builders. The best alternative is WordPress, which is both free and Open Source. Other great apps like Umbraco are Drupal (Freemium, Open Source), Ghost (Free Personal, Open Source), Grav (Free, Open Source) and Jekyll (Free, Open Source).
WordPress is software designed for everyone, emphasizing accessibility, performance, security, and ease of use. We believe great software should work with minimum set up, so you can focus on sharing your story, product, or services freely.
Grav is an easy to use, yet powerful, opensource CMS that requires no database. In a nutshell, installing Grav is a matter of unzipping the file. It is fast, has sophisticated caching, and a light footprint for optimal performance.
Jekyll is a simple, blog aware, static site generator. It takes a template directory (representing the raw form of a website), runs it through and Liquid converters, and spits out a complete, static website suitable for serving with Apache or your favorite web server.
Joomla is an award-winning content management system (CMS), which enables you to build web sites and powerful online applications. Many aspects, including its ease-of-use and extensibility, have made Joomla the most popular web site software available.
ProcessWire is a friendly and powerful open source CMS and CMF with an exceptionally strong foundation. With all custom fields, an easy-to-use jQuery-inspired API, and a powerful page selector engine, ProcessWire will rise to any task.