Several niche search engines specifically crawl open directories:

This mix of seasoned veterans and fresh energy is exactly what makes Khel Khel Mein one of the most exciting projects on the horizon.

A significant number of casual internet users do not know that “index of” directories are illegal. They see them as just another way to download files – like Google Drive or YouTube.

The keyword "updated" is the most critical part of your query. Standard index pages are often static. An implies: