Security repositories like SecLists on GitHub contain text files with thousands of common credentials and passwords for testing purposes.

You can download massive compressed files (like enwik9.zip ) which contain nearly 1 billion bytes of Wikipedia text data. How to Save/Download .txt Files

If a .txt file opens in your browser instead of downloading, you can usually right-click and select "Save As" or press Ctrl+S .

To convert formatted documents, select File -> Save As and choose "Plain Text" as the file type.

A prominent recent project involved generating using OpenAI's Text-to-Speech (TTS) models.

This was shared on Hacker News as a showcase of AI scalability, where the creator used LLMs to parse text and match character voices for a more immersive experience.

If you are looking to download large volumes of text (around 70k files or millions of lines) for training or analysis, common sources include: