Update: 21-09-16

Stride

@A0BBBEMSR-stride

Stride is a smart file manager. By connecting your Google Drive, Dropbox and Box you’ll have access to cross-cloud search and personalized notifications that will alert you when important files get updated.
This integration will allow you to share files from your Stride account using the iOS app. You can share files to a person, group or channel in Slack.