Yii is a free, open-source, PHP framework best for developing both web applications and APIs. It comes with rich features: MVC, DAO/ActiveRecord, I18N/L10N, caching, authentication and role-based access control, scaffolding, testing, etc.
Yii Framework mindshare
As of January 2026, the mindshare of Yii Framework in the PHP Frameworks category
stands at 21.3%, up from 12.4% compared to the previous year, according to calculations based on PeerSpot user engagement data.
