Pierre C. ,
I welcome your interest in ORM Lite. The tool is intended to serve exactly the purpose you described. I note that the version posted on the ORM Foundation web site (v0.11a) has been downloaded 369 times. That suggests that there is some interest, at least, in an ORM Lite tool.
I should probably make a few comments about the "planning interface". The primary reason to include ORM Lite within the GanttPV scheduling tool was for marketing. I wanted to get ORM into the hands of many people who would otherwise never have heard of it. Under its GanttPV name, ORM Lite (v0.11b) has been downloaded from SourceForge.net: 12,243 times in the Windows version, 6,653 times in the Macintosh version, and 1,478 times in the Linux/Unix version. Based on these numbers, ORM Lite may be the most widely distributed ORM-2 modeling tool.
It would be relatively easy to remove or de-emphasize the planning interface in ORM Lite. I personally find it useful to have the project planning tools readily available when working on ORM projects, but I am open to suggestions on this topic.
"How stable is ORM Lite?" I would have to say that ORM Lite is more towards the production ready end of the spectrum that the buggy end. What is there is fairly solid. It can be used to draw ORM diagrams. I have received emails from users who are using ORM Lite for production work and are happy with the tool. On the other hand, the included versions of Rmap and SQL table generation were quite limited.
"Is it complete in its coverage of ORM-2?" ORM Lite includes nearly all of the ORM-2 symbols. The only ones lacking are a few of the most recent (and controversial) additions.
"Would anybody be willing to help?" Good question! I hope many people become interested.
Currently, I am working on several major upgrades to ORM Lite. I have nearly completed a restructuring of the internal code to make certain improvements easier to implement. Another upgrade in process is a verbalizer for ORM Lite. A third is an "Implementation Sequence Diagram" that is intended to help user interface designers work from an ORM model.
I am always grateful for suggestions, feedback, and support. (It would also help if I could find someone who would pay me to work on ORM and ORM Lite. Suggestions anyone? ^_^)
Did you have any other questions?