OpeNext - Open Source Headless CMS
Web Speed That Matters
OpeNext - Open Source Headless CMS launched on April 20, 2025 with 14 votes, #1,902 of 7,818 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Discover the best open source headless CMS for website development and eCommerce. Speed up development, improve SEO, and scale effortlessly with API-first content management.
OpeNext CMS is an open-source, multi-tenant content management system built on Next.js 15 and MongoDB. Visual page builder, theme system, and role-based access control.
Open-source CMS to build the web, openly. Multi-tenant, themeable, and built on Next.js — everything you need to ship with OpeNext CMS . Upload React/TSX Theme Engine ZIP packages from Dashboard → Themes — structure, validation, and activation. Create dashboard, block, and system plugins — required files, runtime contracts, and ZIP upload. Clone the repo, configure MongoDB, and launch your first site in minutes. The first public release of OpeNext CMS with core CMSfrom openextcms.org
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