A cpln file extension is related to the KalOnline Extended Module files. KalOnline is add-on for Kal Online MMORPG computer game.
Software that open cpln file
CPLN file extension - KalOnline extended module
What is cpln file? How to open cpln files?
File type specification:
The cpln file extension is associated with the KalOnline Extended Module, an ad-on for Kal Online server and client software used by Kal Online computer game.
The cpln file stores some kind of data used by KalOnline add-on.
The default software associated to open cpln file:
KalOnline Extended Module 
(obsolete software)
KOEM V2 is an add-on for the Kal Online Server and Client available for Microsoft Windows operating system.
List of recommended software applications associated to the .cpln file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open cpln file, edit cpln file, convert cpln file, view cpln file, play cpln file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with cpln file - KalOnline extended module
Click on the software link for more information about KalOnline Extended Module. KalOnline Extended Module uses cpln file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
Microsoft Windows:
KalOnline Extended Module (obsolete/discontinued)
