1. Self-hosted, there is even a docker container available (https://hub.docker.com/r/binshu/schemio/tags). It does not have authorization and user-management, stores all diagrams on a file system. But it allows you to run server in write and read-only mode
2. https://schem.io - a service for collaborative editing and sharing of diagrams. This is obviously a closed-source for now and it uses the open-source frontend of Schemio
3. Schemio as a js library. Although I am not really releasing it to npm, just hadn't the time to work this out. But there is an option to build a js lib that lets you use Schemio as a Vue component. That's actually how I made it work on https://schem.io
4. https://schemio.app - Google Drive based frontend. All your diagrams are stored on Google Drive. Obviously you cannot share your diagrams, as they are only available to you. This is completely open-sourced and you can even build it yourself with npm
5. Static deployment. If you use option 1, you can export all of your diagrams into a static deployment and even host it on Github pages.
6. Standalone player of Schemio that lets you embed a single diagram on your website