If you need a service to handle file uploads from many sources, including cloud storage and social media sites, Filestack is a good choice. It has a customizable user interface for adding file upload abilities to your apps, supports uploads from local disk, cloud storage and device cameras, and has virus, copyright and explicit content detection abilities. Filestack's Content Ingestion Network handles uploads, and its transformation and conversion abilities make it useful for lots of file formats.
Another good option is Transloadit, which is designed for developers who need a service that can receive and process user files. It's got smart CDN delivery, video encoding, image processing, document processing and more, with support for lots of programming languages and SDKs for integration. Transloadit has a globally distributed infrastructure for high uptime and scalability.
For a lightweight service that's easy for developers to use, check out Uploadcare. It's got a lightweight file uploader, CDN integration for immediate optimization, and on-the-fly image processing. With AI-based image operations, automated document conversion and secure delivery abilities, Uploadcare is flexible and scalable for a broad range of use cases. It also supports several JavaScript frameworks and APIs for custom integration.
Last, Dropbox is a secure and reliable service for storing and sharing files, good for collaboration and data protection. It's got features like protected file storage, password protection, PDF editing and video tools for feedback and approval. Dropbox has a variety of plans for different needs, including personal and business use.