• Andesite Press 181,725
• Arkose Press 205,629
• BiblioLife 365,654
• Book on Demand Ltd. 259,918
• Createspace Independent Publishing Platform 1,264,865

• Franklin Classics Trade Press 179,469
• Hardpress Publishing 211,012
• Independently Published 4,276,784
• Kessinger Publishing 973,351
• Nabu Press 1,389,236

• Palala Press 1,190,919
• Routledge 226,500
• Sagwan Press 188,213
• Springer 228,544
• Wentworth Press 1,010,910