Y'all asking who made e-books? Well, I think it's safe to say that it was Amazon's Kindle that really put e-books on the map. Before that, there were devices like Sony Reader and Barnes & Noble's Nook.
I'm no expert but I think you might be referring to e-book platforms like Calibre or Kindle. Calibre is an open-source app that lets you manage and convert e-book formats, while Amazon's Kindle is super popular for digital book readers. Anyone else use these?
Yo, I'm pretty sure Kindle was the pioneer in e-books. They were the first to mass-produce and popularize digital books back in the early 2000s. Amazon really disrupted the publishing industry with Kindle.