Looking for an image management SaaS alternative to Imgix, ImageKit, Cloudinary

My new project requires us to build a mini Instagram-like feature where users upload/share photos and tag niche products and GPS coordinates. I have evaluated Imgix, ImageKit, Cloudinary this past 2 weeks and they came up short or too expensive.

• Key/value search, ie find all images with tag 'animal=cat'
• Geo search, ie find all images within 5km of latitude, longitude
• Support bulk tagging operations, ie find all images with tag 'vendor=ACME', add new tag 'product=t-shirt'
• Support basic image processing for building responsive apps, give me a square, 300x300 image
• Bring-your-own storage such as AWS S3

Besides Imgix, ImageKit, Cloudinary, who else is in the space? is there an open-source alternative available? Something with a basic image processing API + ElasticSearch for indexing/searching + S3 for storage.