Gifts of Nature sells a GF flour blend that is a one for one substitute for flour in any recipe. They specialize in baking mixes made with brown rice and bean flours. Gillian's Foods specializes in gluten free rolls and other bread items. People rave about the dinner rolls. Glutafin , a broad line GF manufacturer in Ireland, has a comprehensive site of information.
All products appear to be wheat-free.
The Gluten-Free Bounty has GF products, but no web site. Use for camping or emergency supplies. The Gluten Free Cookie Jar has many breads, cakes, donuts, cookies, etc. Gluten-Free Delights sells a line of baked goods. Some breads and lots of sweets.