SSMSBoost keeps track of your working environment and opened documents. In case of an unexpected failure you have the possibility to restore the last session or one of the previous sessions completely or partially. This includes restoring all saved (with filename) and unsaved (QueryN.sql) documents including their connections.
To take advantage of "Restore last session" and "Pick recent session" commands go to SSMSBoost->Recent:



Here is how "Pick recent session" dialog looks like:



Make sure you check SSMSBoost Settings->Recent Tabs for fine-tuning options.



Note that these settings affect not only Recent Sessions but also Recent tabs functionality.