We are building this because we both want to work with data visually rather than just via text, and we feel that existing solutions are either black boxes or unwieldy.
We just open sourced the canvas/editor under AGPL (considering MIT). You can self host it and use your own keys for APIs and LLMs.
The hosted version at https://tailrmade.app allows logging in (but no sign in is needed) (uses Firebase, not open source yet).
I'm using it myself for JIRA dashboards, automated testing, image handling/shader tinkering and building control panels for the enterprise software I work with for a living. Do these workflows also make sense for you? Is there anything you think is missing that you think would be valuable?
Github link: https://github.com/PlugAndPlayground/tailrmade