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S2 — Simple and Fast CMS

S2 is a simple and fast website engine (or CMS — Content Management System) written in PHP. It is distributed for free under both GPL and MIT licenses. It is best suited for small to medium-sized content websites. S2’s undeniable advantages include a convenient administrative interface and high performance. The engine provides a minimal set of essential features, while additional functionality can be implemented via extensions.

Key advantages:

• User-friendly: Intuitive control panel for easy content management and comment moderation.
• Reliable: Auto-recovery after browser crashes or power outages.
• Fast: Optimized for high performance.
• Free & open-source: Licensed under GPL and MIT, allowing unrestricted use for any project.
• Low system requirements: PHP + MySQL/PostgreSQL/SQLite.
• Team collaboration: Role-based access (authors, moderators, editors, admins).
• Extensible: Plugins for added functionality (search, blog, etc.).
• Minimalist: Focuses on essential features (80/20 principle).

See all features

Documentation

For users

• Installation and upgrade
• Configuration
• Control panel

For webmasters

• Language packs
• Styles
• Templates

For developers

See readme