Tab separated value files (.tab) are specially formatted text files. So it should be quite possible to transform data from a text file (.txt) to TAB format. This can often be done using a spreadsheet editor, or in same cases database tool that support this format, by simply importing the text data and formatting them in a structured manner.
Convert Simple text file to Tab separated value file.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert txt to tab on Windows
A relational database management system from Microsoft Office
Convert from txt 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.