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S2 — Simple and Fast CMS

S2 is a simple and fast website engine (or Content Management System, CMS) 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