Blackberry backups (.bbb files) contain various data, including contacts. These might be exported to CSV format using programs like phoneMiner, or ABC Blackberry Converter. Contacts saved in .csv files can be then imported to almost any personal contact data managers.
Convert BlackBerry backup (post 2012) file to Comma Separated Value.
We found 2 software records in the database related to .bbb to .csv file format conversion.
Microsoft Windows software - convert bbb to csv on Windows
A backup and recovery software for smartphones
Convert from bbb file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned bbb to csv. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A conversion utility for BlackBerry backups