What Is Sirius CMS? Setup Guide and the Turkish Open-Source CMS Story

In 2012 Sirius CMS was a promising open-source WordPress alternative built by Turkish developers. Fourteen years on, here’s where the project ended up — and where the Turkish open-source CMS scene stands today.

Original post (2012, translated):

Sirius CMS is a WordPress-style open-source content management system — admin panel + blog frontend — being actively developed by a Turkish developer. Free and web-based.

Why Sirius CMS?

  • Open source and free.
  • Multi-site management from a single panel.
  • SML (Sirius Markup Language) for fast, easy development.
  • Foundation is SEO and AdSense friendly.
  • Custom link structures, custom content areas for ads.
  • Advanced stats with Google Analytics API integration.
  • Error reporting system.
  • Automatic sitemap and RSS generation.
  • File and SQL caching so big sites don’t lose performance.

Watch the video below for installation instructions.

Sirius CMS in 2026

Sirius CMS long since stopped active development. This is a common arc in software: projects sustained by one developer / small team gradually go dormant once the founder loses interest or focuses on a job.

Sirius CMS’s official site and repo are offline or inactive. Other Turkish open-source CMS projects met similar fates:

  • Sirius CMS → dormant
  • mTcms → archive
  • iCMS → archive
  • Various vBulletin / phpBB Turkish forks → mostly gone

2026 — The Open-Source CMS Landscape

Turkish developers today contribute to global ecosystems instead of writing local CMSes. A typical 2026 stack looks like:

  1. WordPress still dominates with 43%+ market share. Practically default in Turkey.
  2. Ghost: publishing-focused, modern. Substack’s self-hosted alternative.
  3. Astro / Next.js: “headless” approach — CMS in the back, separate frontend.
  4. Strapi (France) / Payload CMS: headless CMS APIs.
  5. Hugo / Jekyll: static-site generators — ideal for small blogs.
  6. Notion / Obsidian + Quartz: note-takers turned into blogs.
2026 note: In the AI era, “writing your own CMS” is less attractive — because WordPress + 100 plugins + custom blocks or a headless CMS + Next.js covers most needs. New CMS projects today focus on niches: e-commerce (Medusa), documentation (Nextra, Mintlify), course platforms, blog-as-database.

What Sirius CMS Left Behind in Turkey

Sirius CMS may look like a failure, but it played an important role in seeding open-source software culture in Turkey between 2010-2014:

  • First PHP backend experience for many high-school/uni students.
  • Community-building practice via Turkish forums and IRC.
  • Early Turkish project pushes to GitHub.

Developers who worked on Sirius CMS (and others around it) today contribute to projects like GitHub, Mozilla, Vercel, Hugging Face — Sirius CMS was their starting point.

If I Were Writing a CMS in 2026

  • TypeScript + Next.js + Drizzle ORM + Postgres.
  • Auth: Clerk or self-hosted Lucia.
  • Editor: Tiptap or Lexical.
  • Deploy: Vercel + Neon Postgres.
  • AI editor: integrate OpenAI API for writing suggestions, title generation, categorization.

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