Scrapbook101core is a simplified version of the Scrapbook project described in the blog post A Personal Information Management System: Introducing Scrapbook.
The technical documentation for Scrapbook101core can be see at https://travelmarx.github.io/scrapbook101core/articles/index.html.
Scrapbook101core runs on .NET Core. We created another version for ASP.NET here, but development on that has stopped.