I have numerous projects and keep adding more. It would be easier to find them in alphabetical order
Projects do not currently have any way to auto sort. The only way to get them into alphabetical order is to drag them yourself manually. If you hover over the left hand side and click and hold, it can then be dragged like tasks can be.
We will consider adding a more robust sorting feature for Projects in the future. http://todoist.com/Vote/showProposal/664/