LabelBot is a Github application that can be used to automatically tag an issue with a Github label.
It uses machine learning to read the comment body and title to estimate what the issue might be about, and then labels the issue following the publishing of a short comment notifying the issue creator of the same.

When an issue is opened, the bot predicts if the label should be a:
🐞 bug, 💡 enhancement or ? question labels and applies a label automatically if appropriate.