.P12 file extension - PFX file (Personal Information Exchange)
What is p12 file? How to open p12 files?
File type specification:
The p12 file extension is used for Personal Information Exchange format.
These p12 files require a password to be opened. It stores secure certificates used to authenticate a person or device, such as a computer or Web server.
MIME types:
application/x-pkcs12
application/pkcs-12
S/MIME : Digital identification file
The default software associated to open p12 file:
Microsoft Certificate Lifecycle Manager 
Company or developer:
Microsoft Corporation
Microsoft Certificate Lifecycle Manager (CLM) is a policy and workflow driven solution that helps organizations manage the lifecycle of digital certificates and smart cards.
Company or developer:
Apple, Inc.
Keychain Access allows users to access the Keychain and configure its contents, including passwords for websites, web forms, FTP servers, SSH accounts, network shares, wireless networks, groupware applications, encrypted disk images, etc.
List of recommended software applications associated to the .p12 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 p12 file, edit p12 file, convert p12 file, view p12 file, play p12 file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with p12 file - PFX file (Personal Information Exchange)
Click on the software link(s) for more information. Suggested software applications use p12 file type for internal purposes and/or also by different way than common edit or open p12 file actions.
