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.
WordPress vs Squarespace opinions
WordPress doesn't provide all the visual template editing and in-place content editing tools that Squarespace does
Silex, is a free and open source website builder in the cloud. Create websites directly in the browser without writing code. And it is suitable for professional designers to produce great websites without constraints. Silex is also known as the HTML5 editor.
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.
Known is a simple platform for publishing words, pictures, podcasts and more to a site that you control. Choose to share it on social networks like Twitter and Facebook, or extend it to integrate with the software you already use.
SilverStripe is a free and open source Content Management System and Framework for creating, maintaining websites and web applications.
Many content management systems are focused on developer or site owner needs, but Concrete CMS truly delivers the best to both worlds. An in-context editing toolbar makes it easy to make changes as you navigate the live website.
The MODX Digital Experience Platform gives you everything you need to build, host, and maintain amazing websites your way. Gain complete control over your creative vision without restriction or compromise.
Plone is an open source content management system based on the Zope application server, written in python. Its known to be powerful, reliable, secure and easy to use. Plone excels when compared to other content-management systems in standards conformance, access control...
Plone vs Squarespace opinions
It's not a WISYWIG editor like squarespace.
ImpressPages is a PHP framework with admin panel. A new MVC engine is under the hood so you can customize ImpressPages in no time. Write your own plugins and themes to suit your and customers’ needs best.
Its main repository https://github.com/impresspages/ImpressPages did not update since 2018. Website is unaccessable due to the certificate expired.