Interesting premise, but some of the examples given as BYOC wishlist is a little weird to me. Google doc (the main example) makes sense, sure. With others like

Interesting premise, but some of the examples given as BYOC wishlist is a little weird to me. Google doc (the main example) makes sense, sure. With others like Notion -- I recently started using Notion at a personal level and I feel like much of the draw about Notion is basically the UI (client). I don't use it to publish public pages or anything, only private notes. Most of its usefulness to me comes down to it having a really nice client and it syncs between desktop/mobile/etc. I don't know what Notion would be without the built in client. Simply a set of markdown files? Other examples like Trello / Asana seem to already have solutions. They offer APIs, and while I haven't worked with them to know them extensively, my understanding is you can do basic CRUD operations on tickets. You could possibly build your own clients there.