This question already has an answer here:
Twice now I've seen questions on Stack Overflow where one of my company's products might provide an answer to the question.
One was a slightly vague connection about object-relational mapping, but the other was a specific question about workshop/event management where we have a product which is almost an exact match for the questioner's needs.
Of course the questioner should take a pinch of salt with anything I say about it, but it might be useful to have the product brought to his attention as one possible solution.
What are the rules and guidelines about answering with something I worked on?