Services like iptv-org on GitHub maintain massive collections of thousands of publicly available, legal channels categorized by country and genre.
You can find various repositories and community-shared documents offering free or trial lists for the 2025 period:
To use a "txt" file containing Xtream credentials, you typically need to manually enter four key pieces of information into your player:
Documents on Scribd and Slideshare frequently post updated Xtream login credentials (Server URL, Username, Password).