I just came across this and thought it looked interesting: https://greek-learner-texts.org/
They have a bunch of different texts in different dialects (mainly koine and Attic?), and different texts are in different stages of completion. Here’s a text that seems to be complete: https://fergusjpwalsh.github.io/heyden-formulae/ Everything is open source/free information.
The leading personality seems to be James Tauber, who has written a bunch of open-source python software relating to ancient Greek:
greek-accentuation - https://github.com/jtauber/greek-accentuation
vocabulary-tools - https://github.com/jtauber/vocabulary-tools/blob/master/examples.rst
greek-inflexion - https://github.com/jtauber/greek-inflexion
greek-normalisation - https://github.com/jtauber/greek-normalisation
greek-lemma-mappings - https://github.com/jtauber/greek-lemma-mappings
greek-utils - https://github.com/jtauber/greek-utils
Some of this functionality looks like stuff that I’ve implemented myself in ruby – if I’d known about his work, I probably could have avoided reinventing the wheel in many cases.