Monergism – 750 books in multiple formats (ePub, mobi, and PDF) for free download. Plus, dozens of free resources on the Bible, ministry and theology. All books are in English. Each of the multiple language websites below has English books as well.
Spurgeon Gems – the largest collection of Spurgeon resources online, including a 63 volume set of sermons. From Chapel Library.
Orthodox Presbyterian Publications – 24 free ebooks in ePub, mobi, and PDF.
9 Marks – literature available in 41 languages and in multiple formats (free PDF download, for sale on Amazon Kindle, and paper books).
Desiring God – literature available in 47 languages (articles, sermon transcripts, and books).
Robert Morrison Project – books in 11 languages in multiple formats (free PDF download, for sale on Amazon Kindle, and paper books).
The Gospel Coalition – articles available in 11 languages. Click on the drop down menu on the home page (“US Edition”) for other languages.
Heart Cry Missionary Society – books available in 12 languages
Chapel Library – books, audio-books, booklets, and articles available in 23 languages. Click on the drop down menu under languages.
Truth:78 – children’s curriculum available in 17 languages.