It is not free anymore since version 4.5!
The information regarding this plugin is incorrect, since the author has decided to charge for a license that has just been turned on, so any version since 4.5 of PLEG/PLC/PLTS is now under license and is NOT free (well it is free for 30 days - but that is not free).
Btw this change in license policy is in direct conflict with Swedish laws.
Btw this change in license policy is in direct conflict with Swedish laws.