The full list of development releases, along with links, can be found at https://abrok.eu/stockfish/. Here, though, is that list filtered to include only those releases where the Elo increased by at least 2 in both the short and long time controls.
https://www.mediafire.com/file_premium/uf6d49lguh0d80o/filtered_sf_releases.txt/file
All the games from PGN Mentor combined.
https://www.mediafire.com/file_premium/vu77teoqbuhg4jc/pgn-mentor-archive.7z/file
Here is the complete list of named openings (obtained via Lichess on GitHub) in different formats:
https://www.mediafire.com/file_premium/soqtsohr66rq8wf/openings.zip/file
TSV: This contains the ECO code, the name, the moves in both SAN and UCI, and the FEN.
PGN: This contains a full PGN for each opening. There is no FEN, as that describes the final position, and there is no UCI. Because it’s not in the list, the Double Bongcloud happens to have been added to the PGN only. If you need to use this as an opening suite, all you need do is remove Fool’s Mate, which can be found by searching on the hash symbol (#).
PDF: Made from a DOCX which was made from an HTML file. This includes ECO code, name, moves in SAN and UCI, FEN, and a rendered board of the FEN.
Total size of the ZIP is about 120 MB, mostly due to the PDF.
2023-01 to 2024-07 at the moment
https://www.mediafire.com/folder/olamcyjf899ra/Playchess+Games
Every PGN publicly available from The Week In Chess, concatenated. Updated 2024-08-15.
https://www.mediafire.com/file_premium/x0q2tgkors0bcvt/twic-public-240815.zip/file