I've just finished reading Domain Driven Design and I'm enchanted with some of the ideas covered in it. Do you know any companies that implement ubiquitous language in their projects?
The Domain Driven Design Yahoo Group may be a better place to find an answer to your question.
This is an indirect answer. You could find such projects by looking at software development companies who apply domain-driven design practices and seeing who their clients are.
Three such companies are:
Domain Language - at which Eric Evans works, he wrote the Domain Driven Design book
Factor10 - at which Jimmy Nilsson works, he wrote "Applying Domain-Driven Design and Patterns"
OmegaPoint - employee Dan Bergh Johnsson has given a number of talks on DDD
The company I work for uses Domain-Driven Design to its fullest and after a few very successful projects, we're sticking with the design philosophy.
The company is Hint Innovation, we are a relatively new company so the website is not done yet, but it should be by January, you might want to check back then.
I don't know of any other company that uses the Domain-Driven Design approach for all of their projects.
We've been using DDD at Earnware Corporation for the last 2 years. Since we've been around for 10+ years, we employ the "anti-corruption layer" pattern quite a bit to talk to legacy systems.
DDD means a lot of things, but it also is something you can start doing right away with the next function you write (http://www.agileatwork.com/domain-driven-design-in-the-small/). It's about closing the gap between business concepts and your code so that your code can bend in the right spots. The patterns like unit of work and specification help accomplish that end result.
Chillisoft has been doing Domain Driven Design for 10 years and have more recently developed Habanero an Enterprise Application Developement Framework that incorporporates many of the principles of Domain Driven Design and the many lessons learnt over the years.