Img.vision - Image hosting & video hosting for eCommerce sellers
Flamelink.io - Flamelink.io is a headless CMS for Firebase.
UploadHouse - Thumbnail and resize your photos and images
PushTable - Headless CMS for Google Firestore and Firebase
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
FireCMS - An open source CMS/admin panel based on Firestore