Hire Sitefinity developers.

Upgrade history, not a certificate. Ask which Sitefinity versions they have upgraded a live site between, and what broke. Ask them to explain the difference between a Feather MVC widget and a Sitefinity Renderer widget, and when output cache stops a change from showing up. Someone who has actually shipped Sitefinity answers those in a sentence. Someone who has not will talk about .NET in general.

Yes, and it is a large share of our work. We start with a read-only review of the solution and the running site: Sitefinity version, custom widgets, dynamic modules, templates, integrations, and the error log. You get a written list of what is risky, what is fine, and what the upgrade path looks like before any billable development starts.

Yes. We wrote and maintain SitefinityCommunity.Mcp, an MIT-licensed Model Context Protocol server with 31 tools for logs, pages, widgets, content, forms, config, permissions, and incident investigation. It works with Claude Code, Cursor, Codex, VS Code, and GitHub Copilot. It installs with npm install -g sitefinity-comm-mcp (or as a dotnet tool) plus a small plugin compiled into your Sitefinity web app.

With SitefinityCommunity.Mcp, the plugin only answers requests carrying a matching API key, redacts secrets on both ends before anything reaches the model, and logs every request. Write operations are off by default, need two separate opt-ins, and are refused outright for any environment whose name starts with prod. Admins can disable individual capabilities, exclude form fields, and hide config sections.

Yes. Every engagement is remote. Sitefinity work does not need anyone on site: we work against your repository, a staging environment, and, with the MCP plugin installed, your logs and content model.

Progress Sitefinity is an enterprise content management system built on ASP.NET. Companies use it to run a small number of large websites: marketing or product sites with hundreds to thousands of pages, multiple language versions, and dozens of editors. The selling point versus simpler CMSs is that one Sitefinity install covers multiple sites, multiple locales, personalization rules, and a real editorial approval workflow without bolting on third-party tools.

Sitefinity supports both traditional ASP.NET MVC delivery and headless delivery through OData and GraphQL services. It is best described as a hybrid CMS. Teams can run full Sitefinity MVC pages, a .NET Core Sitefinity Renderer app, or an external Vue, Next.js, or React frontend consuming the Sitefinity content APIs. Our work focuses on the MVC pattern, with Vue 3 and Vite embedded inside existing Sitefinity MVC widgets.

Current Sitefinity releases run the CMS backend on ASP.NET 4.x and the optional Sitefinity Renderer on modern .NET Core as a separate frontend application. The exact supported versions move with each Sitefinity release, so we verify against the current Progress release notes on every engagement before committing to a target version.

A Sitefinity upgrade scales with the number of custom widgets, dynamic modules, integrations, and templates in the build, not the raw jump in version numbers. We audit the existing implementation, estimate effort per custom area, and deliver a version-by-version upgrade plan so stakeholders know what breaks, what changes, and what stays identical. A small upgrade can run a few weeks; a multi-version legacy WebForms-to-Renderer migration is typically a multi-month program.

Yes. Sitefinity can host Vue, React, and other JavaScript frontends in three patterns: embedded inside ASP.NET MVC widgets and pages, rendered through the .NET Core Sitefinity Renderer, or consumed purely as a headless content API by an external Node app like Next.js or Nuxt. We specialize in the first pattern: Vue 3 and Vite builds embedded directly inside Sitefinity ASP.NET MVC, without adopting the Sitefinity Renderer and without splitting the frontend into a separate Node application. That pattern is documented end-to-end in our Vue 3 + Vite guide.

Sitefinity sits in the same enterprise .NET CMS category as Sitecore, Optimizely, Kentico Xperience, and Umbraco. It tends to be the strongest fit when teams need structured content, multisite, multilingual, and personalization without the licensing weight and infrastructure footprint of Sitecore or the commerce focus of Optimizely. It is closer to Kentico Xperience in feel, with stronger out-of-the-box editorial features than open-source Umbraco.

Yes. We work directly with end clients and as a white-label Sitefinity development partner for digital agencies that need specialist expertise without a permanent hire. Engagements range from single widget builds and performance audits to multi-month upgrade and modernization programs.