LibriVox celebrates its 20th anniversary this month. From the humble beginnings of a group of friends meeting online to becoming one of the world’s largest producers of free audiobooks, LibriVox volunteers have achieved many milestones in the last two decades. Let’s dive into LibriVox history. All of the currently 20,648 completed LibriVox titles were chosen by its readers, and countless listeners have chosen their favourites over the years. One of the most downloaded LibriVox books is The Art of War by Sun Tsu , a book of strategy from Ancient China that has lost none of its appeal. Equally strategic (and almost as popular) is a world-famous sleuth invented by Arthur Conan Doyle . The Adventures of Sherlock Holmes still define detective fiction (and detectives) to this day. Fact or fiction? Edward J. Ruppelt tried to settle this question once and for all in his 1956 Report on Unidentified Flying Objects .…