If you're looking for an ImageKit alternative, Bynder is a good option. It's a digital asset management (DAM) system geared for big businesses, with features like dynamic asset transformation, an automation studio for creating content, AI-indexed search and a developer's programming interface. It's good if you need a big system to manage and distribute content.
Another good choice is Cloudinary. It's focused on image and video API technology that automatically delivers optimized media for any device. It's got AI-powered transformations, media management and editing, and is geared for developers and companies that want to boost engagement and revenue by delivering media in the best possible form.
If you prefer a more developer-centric approach, Transloadit is a full service for receiving, processing and delivering files. It works with lots of programming languages and offers features like video encoding, image processing and smart CDN delivery. That makes it good for companies and developers who want to automate media workflows and handle file uploads.
Last, Uploadcare is a full-featured file management service with tools for uploading, processing and delivering files. It's got features like real-time optimization, on-the-fly image processing and secure delivery with signed URLs. It's designed to scale and be flexible, accommodating lots of use cases and requiring little setup.