Concurrent multi-user support has been part of our long-term goals for a while now:
Time to update the status of this feature request…
Note it still says “long-term”, which currently means several years ahead of us.
An error occurred while saving the commentJorg Bliesener commented
I have no doubt that this suggestion represents a major issue. However, I consider it more than just "nice". It's a MUST for gnucash to evolve. This should be complemented with a good API that allows for alternative user interfaces (AJAX,Static Web, Command line, ...), effectively introducing MVC concepts.