Books about Christianity -- Controversial literature (sorted by popularity)
- The Profits of Religion, Fifth Edition Upton Sinclair 90 downloads
- Versuch einer Kritik aller Offenbarung (German) Johann Gottlieb Fichte 89 downloads
- The Doubts of Infidels William Nicholson 87 downloads
- The Kernel and the Husk: Letters on Spiritual Christianity Edwin Abbott Abbott 84 downloads
- The Cradle of the Christ: A Study in Primitive Christianity Octavius Brooks Frothingham 79 downloads
- Thoughts on the Christian Religion, by a Deist Anonymous 73 downloads
- Christianity in relation to Freethought, Scepticism, and Faith Charles Bradlaugh and William Connor Magee 72 downloads
- Ingersoll in Canada: A Reply to Wendling, Archbishop Lynch, Bystander; and Others Allen Pringle 70 downloads
- Christian Mystery: A Chinese Tale, Found in the Portfolio of a Portuguese Friar Anonymous 59 downloads
- Antikristus: Arvostelukoe kristinopista (Finnish) Friedrich Wilhelm Nietzsche 45 downloads