Some notable examples of large token windows include:

• The lexical analyzer used in the GNU Emacs text editor, which has a token window of around 1MB.
• The lexer used in the Apache HTTP server, which has a token window of around 512KB.
• The lexical analyzer used in the MySQL database server, which has a token window of around 256KB.

It's worth noting that the size of a token window can vary greatly depending on the specific requirements of the application, and it's not uncommon for token windows to be dynamically resized or allocated on demand.