A downloadable version of the latest master index is found at:


https://isogg.org/tree/Indexdata.csv     You also might be able to open it directly in a new window by right-clicking with your mouse.

It is saved in the csv format (comma-separated version) which imports or opens into a spreadsheet.   Links shown in the first row will not work.

If you are using a Google Chrome browser and encounter an error message, copying the link to a new incognito window will likely resolve the problem.