Tienson Qin @tiensonqin is the creator of LogSeq, “A local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.”
It is written in ClojureScript and is open source under the AGPL. The application is entirely front end in the browser, with some minor back end handling around Github and Google logins. You can sync your data to your own Github repo, or use the new Chrome Native File System API to read and write files directly from your desktop.
Tienson will tell us about the project and tech used, as well as show a demo of the app in action.