Windows 2003 Server - Dude 3.6 - 62 - devices.
why not try the current version before reporting memory leak bugs 
?
Dude v3.6
Dude v4.0beta2 - still beta
v3 will not be updated. use v4.
yes, it’s awkward, but true.
Alternatively, while still using v3.x:
Create a batch file that stops & starts the dude service, and schedule it to run daily (at some point at night).
I have been doing this for the past couple of years without issues. Keeps the memory footprint low without any other side effects.