The conversion of the file RB to MOBI will allow you to edit a file using other software than before. The conversion RB to MOBI is particularly helpful in cases where you want to give certain features to the data in the RB file, and all the programs that support the RB format do not have the possibility to introduce the desired changes.
Just download one of the programs from the list and install it on your computer. After starting the program, select RB file that you want to convert. Then select the target format (in this case MOBI) and follow the instructions. Save the converted MOBI file in the selected location. From this moment you can open the MOBI file with all the programs that you will find here.