This is the old version of e-sword, after the 8 series of version numbers, they changed the database type and all older module became unuseable in the newer versions ande vice-versa. There are still many colletions of addons and most all free bible, commentary and ditionary modules are available for the older version. 
For me, the changes in usability make the newer versions unsatisfactory.
The license says 'free for personal use' so; 
feel free!