All Indie Writers publishes a writers' market that includes freelancers offering proofreading services. Members of the directory also offer the related services of blogging, copywriting and editing.
In addition to online directories, individual writers and agencies of multiple writers list their services on the Web. Dragonfly Freelance offers proofreading as one of its editing and professional search engine optimization services. This agency leaves feedback using Microsoft Word's Track Changes feature and offers a double check that can catch errors the original writer may miss. Considerations in evaluating a proof reader include whether one is actually needed, what questions to ask and variables included in the cost.