Most database management programs offer a simple export to Excel XLS files, so in case of *.s3db databases it also should be possible to export the data in a spreadsheet.
Convert SQLite 3.0 database file to Microsoft Excel 97 to 2003 workbook.
We found one software available in the database for this conversion.
Microsoft Windows software - convert s3db to xls on Windows
Fully-featured version of Navicat for Windows
Convert from s3db file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.