The app is still available on the Heroku link below. As of the time of this writing, it is still functional; however, there will not be any work done on the project in the near future.
scotty is a WebSocket-enabled PDF viewer, allowing multiple clients to look at and browse through a document together in real time. (Who's Scotty?)
scotty is designed to be a lightweight app and isn't comparable to a product like Google Slides. The app's main purpose is to allow multiple people to have the same view of the same document in real time, as if they're in the same room together (page navigations are synchronized, so everyone is always on the same page).
room.room's URL with everyone on your team.scotty is an early-stage work-in-progress. This means that while clients can upload and view PDFs, the app's UI/UX is fairly limited. A redesign is currently in the works and can be viewed here.
A list of additional functionalities (and bugs) can be viewed on the project's issues page.
Because internal documents contain confidential information, they are treated with caution. That said, there is still room for improvement, such as adding authentication, making S3 permissions more restrictive, etc.
room IDs, user IDs, and temporary file names are all stored in memory.