BBOalert is a free Chrome add-on developed by stanmaz.git. It falls under the category of Browsers and is specifically classified as an Add-on & Tools.

This add-on addresses the issue of alerting and explaining conventional calls during bidding on BBO (Bridge Base Online). Playing with artificial bidding systems on BBO can be challenging as explaining each alerted call can be time-consuming and frustrating for all participants. BBOalert solves this problem by allowing users to predefine artificial bidding sequences in a table. When these sequences are used, the opponents automatically receive the explanation, saving time and preventing frustration.

Additionally, any explanations manually entered during the game are recorded for future use.