A Mac-compatible Yahoo! photo explorer widget is available at no cost.
One of the great things about Flickr Explor'r is the fact that it defaults to the current day's photos, but you're also able to browse previous days as well as select any specific date that you're interested in. Once you've chosen your date, the view will cycle through all 500 photos that have been selected as the most interesting for every day, and you can choose the rate at which it cycles.
What's more, if you highlight a specific photo with your cursor, you'll be able to see its title. And if you click on the photo, it will take you straight to that photo's Flickr page. Overall, Flickr Explor'r is a great tool for anyone looking to keep up to date with the most interesting photos on Flickr, and it's definitely worth checking out.
Version 1.5: N/A