Top Alternatives to SilverStripe

WordPress is an open source content management solution based on PHP maintained by Automattic which is also being offered as hosted solution.

Drupal is an open source platform for building websites.

ProcessWire is a free PHP open source CMS with a great API built to save you time and make development fun at any scale.

ImpressPages is an open-source PHP framework with built-in content editor.

concrete5 is an open-source content management system (CMS) for publishing content on the World Wide Web and intranets.

Plone is a free and open source content management system built on top of the Zope application server.

Squarespace is a SaaS-based content management system-integrated website builder, blogging platform, hosting service and domain name registrar.

Redaxscript is a modern, ultra lightweight and rocket fast Content Management System.

Textpattern is a free and open-source content management system (CMS) based on PHP and MySQL.

Fork is an easy to use open source CMS using Symfony Components.

Web Start Today is a premium Do-It-Yourself (DIY) website builder.

ExpressionEngine is a flexible, feature-rich content management platform.

Novius OS is a content management system (CMS) open source.

Sitefinity is a modern ASP.NET Web CMS, delivering intuitive web content management for business professionals, robust CMS development environment.

GetSimple CMS is a free web Content Management System with the primary goal to be simple and easy to use.

Chyrp is a ultra-lightweight ultra-flexible blogging engine with a fetish for birds and misspellings.

Symphony CMS is a XSLT-powered open source content management system.

Website X5 is a software that allows you to create autonomously websites, blogs and E-commerce.

Anchor CMS is a lightweight blogging platform with a focus on simplicity and elegance.

Craft CMS is a content management system for developers, designers, and web professionals that blends flexibility, power, and ease of use for clients.

Pimcore provides free and open-source customer experience management, digital asset management, product information management, multi-channel publishing and e-commerce software.

blogstrap.py is a simple Blog using web.py and bootstrap3.

Umbraco is an open source content management system (CMS) platform.

dotCMS is an open source content management system (CMS) written in Java for managing content and content driven sites and applications.