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Information about who is currently following a user is readily available on front ends such as Steemit, Busy and Steempeak. It appears that all three list the followers in the order they followed.

If you want to be notified when someone follows you, using GINAbot on Discord is one way.

As far as who unfollows you, GINAbot will also notify you of that, as well.

Alternatively, you can go to https://steem.makerwannabe.com/, type in your username, and get a list of those who have followed and unfollowed you during certain intervals. The list provides these actions in date order for the time period you select.

The unfollow part isn't listed on the home page, but shows up in the results when typing the user name into the who follows text box.

The website, in spite of the domain name, is actually called Steem Followers and offers the ability to check on resteems.

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