PayPal vs Adyen vs Klarna Magento Extensions — Which Are Actually Maintained in 2026?
Most extension comparison posts age out in six months. This is an annual maintenance audit of the three biggest payment extensions for Magento — PayPal Commerce Platform, Adyen Magento Plugin, and Klarna Payments — measured across five hard axes: GitHub commit velocity in the last 90 days, Magento Marketplace average rating, open-to-closed issue ratio, real support response time, and PHP 8.4 + Magento 2.4.9 compatibility status. Each extension gets a maintainability score and a recommendation by store size segment. Updated quarterly.