I read this question but was somehow not satisfied with the answers.
I also quickly read (as suggested in that question) the last chapter of Marco Cantù 2010 Handbook, from which I quote the following (I think I can quote such a short text):
I [Marco Cantù] do have a lot of
investment in server side web and REST
applications written in Delphi, and in
the recent years I've started playing
with and introducing at conferences a
Delphi Web Application REST
Framework119 (that is, DWARF), which
at this time is still not publicly
available... simply because it is too
sketchy and unfinished to be
published. I've seen other ongoing
efforts to clone Rails in Delphi and
offer other REST server architectures.
I think that if you want to build a
very large REST application
architecture you should roll out your
own technology or use one of these
To create your REST services, try our Open Source mORMot project. Now it is a well known and stabilized project, used world wide in production.
You can use any DAC with the current state of the framework by implementing a custom
TSQLRestServerStatic class (similar to the
TSQLRestServerStaticInMemory class, but calling your DAC): so you'll benefit for the ORM and the JSON RESTful architecture, together with the high-speed http.sys kernel-mode server.
The SQLite3 engine is NOT mandatory with our framework, even if it was designed to work better with it.