OpenTalmud

Every digital Gemara I have used is a website about a page rather than the page itself. I wanted the other thing. The Vilna daf rebuilt at its printed coordinates, in a face traced off the original plates. 5,392 dafim, set the way they were set.

Everything else sits on top of that without shifting it. Look a word up and the answer arrives on the page instead of in another tab, and what is underneath does not move. One rule keeps it that way: a feature needs a printed precedent, or it lives off the page. Bookmarks are ribbons. Highlights are pen marks. Notes go in the margin or at the foot. Anything with no precedent at all has to be the quietest thing on screen.

The part I have not seen anywhere else is the notebook. It shares one address with the reader, a Ref, which is the address of a passage. So a chiddush can point at the words it is about, and a daf can tell you which pages you wrote from it. That shared address is the only reason this is one application instead of two.