While I can't say anything definitive or give a timeline we do want to support research groups like yours. Ideally we'd be able to have our paid offering for companies using Nextjournal in private subsidize our open science/source offering.

We also definitely want to open source parts of our product but we haven't figured out what parts (or everything) and under what license.

Our priority is currently on providing a useful hosted product and become sustainable. It's certainly also interesting to see how e.g. metabase is doing it the other way around, open source first without a hosted product but I guess I'm a bit scared of not being ready for developing Nextjournal in the open at this point in terms of bandwidth and keeping things backwards compatible.