The app mCoffee is an add-on for the Firefox browser that allows you to create bookmarks for any URL with a simple rule and save them in the system.

You can add bookmarks based on any date of the month, day of the week, and day of the month. For example, if you want to create a bookmark for a website that you visited during the afternoon of Tuesday, you can create the rule "Tuesday Afternoon.html".

The app supports a number of different formats for a bookmark:

url - a string containing the URL of the page

day - a date

weekday - a week number (Monday, Tuesday, etc.)

month - a month number (January, February, etc.