How to open .KEYCHAIN file extension?

If you cannot open a new file that has been saved in the .KEYCHAIN format you need to download the appropriate software. The manufacturer of .KEYCHAIN files is Apple; .KEYCHAIN files belong to the Data 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 .KEYCHAIN files. Activities performed in the order described should solve the problems with all the files in the .KEYCHAIN format.

• What is .KEYCHAIN file?
• How to open .KEYCHAIN file?
• What is .KEYCHAIN file?