Pm extension is associated with Unix XV Graphic File. You can try to open pm files with XnView software.

1- It may be a image file which created by XV software on Unix operating system. You have chance to open pm files with XnView software. 

2- IBM firm uses pm files (Presentation Manager) with OS/2 presentation software.

3- Lastly, the function modules which created by PERL language are also saved with .pm extension.

What to use pm

XnView or Perl editors

which page related to pm file

pm Related Searches

You can check related links about pm fileextension.