- Accentance, LLC
 - Fairfax - Professional writing and editing consisting of copywriting, ghostwriting, copyediting, proofreading, and other editorial services. - Adler & Robin Books Literary Agency
- Represent fiction, nonfiction and computer books.
- EcoScribe Communications
- Specialises in writing, editing, and design services for environmental and nonprofit organisations.
- Editech Services Inc.
- Reston - Publication and technical support services including a graphics and editorial studio.
- Gail Ross Literary Agency
- Howling Dawg Communications
- Alexandria - Services in writing, editing, desktop publishing, graphic design, and web design.
- Literary Agents of Washington
- Specialising in first-time authors, screenplays, playwrights, and other genres.
- Organizational Communications, Inc
- Herndon - Offers proposal consulting and manager services.
- Vaughan-Nichols & Associates
- Lanham
- Wordfirm Inc.
- Providing businesses with professional publication services, including writing, editing, proofreading, and publication design.
- WriteDirections
- Frederick - Classes, coaching, and publications.
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