Dropbox vs OneDrive

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.

OneDrive's API, served through Microsoft Graph, lets applications read, write, and share files and folders in a user's personal or organizational OneDrive. A live GET against the real gateway, graph.microsoft.com/v1.0/me/drive, returned a 401 without a token, reconfirming OAuth 2.0 auth over HTTPS, and a follow-up OPTIONS preflight returned Access-Control-Allow-Origin: *, resolving cors from unknown to yes. Personal Microsoft accounts get 5GB free, with paid Microsoft 365 subscriptions raising the storage cap substantially.