Backup Cleaner

Adobe Lightroom helpfully backs up your photo catalog every so often if you ask it to. What it doesn't do is to remove those backups after they're no longer needed. It's easy to forget about the backups and end up with dozens or even hundreds of Gb of old backups on your disk.

This plugin doesn't interfere with the standard Lightroom backup process at all. Instead, it runs when Lightroom starts and identifies backups which are too old, and then deletes them. You specify how old is too old, and you can also say the smallest number of backups you want to keep.

Once it's set up, you just forget about it - just like the backups.