GitHub - libvips/php-vips: php binding for libvips is a faster alternative to GD / Imagick and uses less memory
There is an adapter for Imagine (GitHub - rokka-io/imagine-vips: libvips adapter for php imagine) and a WIP project for Intervention/image (GitHub - osiemsiedem/intervention-image-vips-driver: VIPS driver for Intervention Image.)
Originally posted at PHP vips integration for image manipulations – [READONLY] Community Feeback for SilverStripe CMS & Framework