Dropbox vs FileUp

Dropbox is a cloud file-storage and sync platform, and its API lets apps read, write, and share files and folders in a user's Dropbox account. A live POST against the real gateway, api.dropboxapi.com/2/users/get_current_account, returned a 400 without a token, reconfirming OAuth 2.0 auth over HTTPS, and a follow-up OPTIONS preflight echoed the request Origin in Access-Control-Allow-Origin, resolving cors from unknown to yes. The free Basic plan includes 2GB of storage, with paid Plus, Professional, and Business tiers raising the cap and adding team features.

FileUp is a self-hosted, open-source temporary file-upload and sharing service built on .NET, offering a public REST API for anonymous uploads with configurable expiry times and view limits. A live OPTIONS preflight with an Origin header against the maintainer's own running instance, upload.sinasnp.com/api/public/upload, returned a 204 with no Access-Control-Allow-Origin header, resolving cors from unknown to no; the public upload endpoint requires no auth (only the separate admin panel uses Basic Auth), and HTTPS was reconfirmed. It's a free, open-source project with no paid tier.