@amazonbees In ServiceNow, you can build your own custom scoped application using Studio (Traditional IDE in ServiceNow) or App Engine Studio (low code/no code) application development tool. Each custom application can have their own Dashboards, form, workflows/flows, business rules and script includes.

Only ServiceNow can develop and distribute plugins, however, developers can choose to build their own custom scoped applications and distribute/monetize it using ServiceNow store.

For more information on building custom application please refer to URLs https://docs.servicenow.com/bundle/tokyo-application-development/page/build/applications/concept/c_C...

https://www.servicenow.com/workflows/creator-workflows/what-is-application-development.html

https://docs.servicenow.com/en-US/bundle/vancouver-application-development/page/build/custom-applica...

Hope this helps.