How to open .APL file extension?

If you cannot open a new file that has been saved in the .APL format you need to download the appropriate software. The manufacturer of .APL files is ESRI; .APL files belong to the GIS Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .APL files. Activities performed in the order described should solve the problems with all the files in the .APL format.