Where would one find a library of Chinese classics that have never been translated into English? Suppose an English-speaking software developer and data scientist were interested in finding ancient Chinese writings that have never before been translated into English.  Suppose a developer desired to produce automated translations, or at the very least produce text-to-speech of audible spoken Chinese.  Or at the very least index Chinese words in a searchable format, create "tag cloud" visualizations, etc.

Possibly also to paraphrase Classical Chinese writing into modern, simplified Chinese characters, for easier collaboration with modern Chinese speakers, scientists, and software developers.

Buddhist texts are especially of interest.  Taoism, Confucianism, civil-service exams and commentary, or traditional Chinese medicine would also be useful.

What online resources exist, where classical wisdom literature is preserved as pure UTF text files?  Or as high-quality scans or photograph images of ancient manuscripts?
several free resources, depend on where you’re:

the internet archive has a cadal (china-us million book digital library project) collection, which contains 89000+ books. most books of imperial collection of four (四庫全書) are included, plus many literatures of yore.

this collection alone should suit your need, unfortunately, it’s blocked in “that area” now.

for buddhism texts, try the 漢文大藏經


  to produce automated translations


forget it, no one can 


  into modern, simplified Chinese characters


even the communists do not do it, find &amp; read carefully what’s the rules of the simplification.

have fun :)