Umbraco
Friendly open-source .NET CMS with a strong community
Overview
Umbraco is a mature open-source CMS built on ASP.NET Core, known for its flexibility and developer-friendly architecture. Content is modeled using document types and can be delivered via both traditional MVC views and a Delivery API for headless use cases. It ships with a polished backoffice editor, media management, and multi-lingual support. Deploy on any server running .NET; managed cloud hosting is available through Umbraco Cloud.
Where it falls short of WordPress.com
- Requires .NET hosting environment, which is less common and often more expensive than PHP/Node stacks
- The Marketplace for packages is smaller than WordPress's plugin ecosystem
- Headless Delivery API is relatively new and lacks the maturity of dedicated headless platforms
- Commercial packages (e.g., Forms, Deploy) are required for some common workflows and add cost
We list the gaps honestly so you can decide if the trade-off is worth owning your data.
Tags
Claim this listing to keep it accurate, add a deploy template, or feature it on relevant pages.
Embed the Umbraco difficulty badge in your README — it links back here.
[](https://openreplace.com/umbraco)Similar open-source projects
Other self-hostable tools in the same space worth comparing.
Leading open-source headless CMS with flexible API and content type builder
Modern open-source publishing platform for blogs and newsletters
Developer-first headless CMS and application framework built with TypeScript
World's most widely used open-source CMS and blogging engine