Fanstatic: Welcome to Site Creators
This site you're reading just moved to a new static site generator, and it's worth explaining why: SuCoS is no longer just a tool MASS4 happens to use. As of this week, it's a first-class citizen of the MASS4 ecosystem — the same tier as Guinevere, Gaya, and Turian — and every MASS4 site is migrating to it, starting with this one.
From side project to shared infrastructure
Fanstatic didn't start as a MASS4 project. It started life as SuCoS, a personal static site generator built from scratch in C#, three years and nine major versions in the making: Liquid templates, full i18n with per-language sections, Hugo-style ref/relref shortcodes, a validate-links command that knows the difference between a local test run and production, and — most recently — a proper Windows installer and winget package. Somewhere along the way it became the tool every other project reached for, including this one. Renaming it to Fanstatic and moving it into github.com/MASS4ORG just made that "official".
If you followed the 180° turn back to C#, this is the infrastructure equivalent: we don't just build engines and GUI toolkits, the site you're reading is built the same way, in the open, with the same "dogfood what you ship" principle.
Why site creators should care
Fanstatic is a genuinely small, fast, C# static site generator, and it's fully open source under the MIT license — not a MASS4-only internal tool. If you're a .NET developer who wants a site generator that doesn't require learning Go templates or a JavaScript build pipeline:
fanstatic new-site <YOUR_SITE_PATH> # To create your site
fanstatic <YOUR_SITE_PATH> # To build your site
fanstatic serve <YOUR_SITE_PATH> # To build and run locally
fanstatic validate-links <YOUR_SITE_PATH> # To check all links
fanstatic api <YOUR_CODE_PATH> <YOUR_SITE_PATH> # To generate API reference
That last command is one we lean on directly: fanstatic api generates API reference pages straight from a C# project's source, which is exactly how Fanstatic's API docs get built. Markdown content, Liquid templates, i18n, internal-link shortcodes, and link validation that understands local versus production URLs all come out of the box.
What's migrating, and what's next
This site (mass4.org) is the first to move — you're already looking at output built by Fanstatic. The rest of the MASS4 sites follow as they're ready. If you want the full story on the rename itself, it's on Fanstatic's own site: Introducing Fanstatic 7.0.0.
Welcome, Fanstatic.