Comments:"Dropbox - Sync API - Simplify your life"
URL:https://www.dropbox.com/developers/sync
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Give your app its own private Dropbox client and leave the syncing to us.
Dropbox built-in
Focus on your data. The Sync API handles all the caching, retrying, and file change notifications.
Write locally, sync globally
Writes are local so changes are immediate. The Sync API syncs to Dropbox behind the scenes.
Work offline
The Sync API lets your app work great even when offline and automatically syncs when it's back online.