For an open source alternative written in Go, with a Dockerfile to make deployments super easy see: https://github.com/pressly/imgry https://github.com/pressly/

For an open source alternative written in Go, with a Dockerfile to make deployments super easy see: https://github.com/pressly/imgry https://github.com/pressly/imgry We use it to scale 10million images / day across 3 c3.large boxes with ave response time of 120ms.