“Just like 37Signals offers you project management tools or hosted chat, Zendesk offers you a simple way to manage all incoming help desk inquires.”
Often a simple comparison says more than a thousand words. Even more when it comes from Om Malik 🙂
BTW, is it 37Signals, 37signals or 37 Signals? Read more in this blog post from Signal vs. Noise: How not to apply for a job.