Best Open Source Alternatives to Squarespace CMS

Compare the best free and open-source alternatives to Squarespace CMS — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 3 alternatives

Squarespace CMS

Proprietary SaaS

PricingSubscription

Platformsweb

WebsiteVisit site

Squarespace CMS alternatives compared

Open-source alternatives to Squarespace CMS, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
WordPress	21,298	GPL-2.0-or-later	LinuxmacOSWindowsDocker	Yes	Aug 2026	Visit
Joomla	5,119	GPL-2.0-or-later	LinuxmacOSWindowsDocker	Yes	Jul 2026	Visit
Concrete CMS	850	MIT	LinuxmacOSWindowsDocker	Yes	Jul 2026	Visit