Google Drive 
Use Google Drive within Slack to:
- Create new Google Docs, Slides, and Sheets files
- Import an existing file from Google Drive into a channel or direct message
- Search directly within Google Drive files shared within Slack
- Automatically grant access to the files you share with the right audience
- Get updates in Slack on changes in Drive, like comments, access requests, and new files shared with you
- Reply directly to comment notifications from within Slack and have them posted to the file
