Google Drive - Access and sync your files anywhere
Papermind - Papermind Slack App is a collaborative article-editing and document management platform for Slack
Microsoft OneDrive - Secure access, sharing & file storage
DocuExpert - AI powered document processing and review software
Cloudfogger - Easy and secure encryption for the cloud. Provides security for all cloud storage services like Dropbox, OneDrive and Google Drive.
Trainual + Slack Integration - Capture knowledge or access training right inside Slack