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.
Unicorn Platform is a modern landing page builder for startups, solo-entrepreneurs and hackers. Use the full power on the free plan, pay to connect your own domain.
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.
With over 20 million downloads, Directus is the world's first Open Data Platform for instantly turning any SQL database into an API and beautiful no-code app.
Website builder from docs and spreadsheets. No-code tool for creating websites.
1st Website Designer breaking limitations of website builders with the freehand positioning. Nicepage generates mobile-friendly websites with the clean HTML code. Only Nicepage is available for Windows, Mac OS, WordPress, Joomla and online.
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.
uCoz is a free website-builder that includes hosting and a website management system. uCoz works according to the principles of Web 2.0 and allows creating of the most complicated projects with extraordinary simplicity and speed.Warning
Blocked by Google chrome, many DNS plugins and is known to be dangerous to many experts.