More and more publishers are going open access! If you are interested in open access publishing, here's how to find a publisher:
The links above are some good places to start.
You might also want to check out the policies of publishers in your field. Some fields have well-known open access journals. For instance, in biology, PLoS is a major open-access publisher.
Check out the publications of your professional associations; those are sometimes open access as well.
If you'd like more help identifying open-access publishers, please contact me!