I am evaluating Hibernate for use in a large-scale, 24x7 production project with some hard performance characteristics. I would like to know of other large, business-critical projects that are using Hibernate as the chief persistence framework. If you have been involved in such a project and don't mind talking (off-line) with me, let me know your contact information. I will be asking about your data model, object model, architecture, transactional characteristics, performance, development practices and tools, among other things.