Bak File Extension
Bak stands for backup file. These extensions can be opened by the software which is created by the backup producer.
Some softwares save the files with BAK extension while they are backing up documents.
Bak: It is abbreviation of backup word.
If you know that which software has created this file, you can make double click on it and change the extension. Then you may open these with related software.
Example: While you are working with Word application you may have only backup version after saving process.
You can write file.doc instead of file.bak , then you can open it by making double click.
What needed to Open Bak file extensions.
the software of backup producer.
Links about Bak file extension
No connection related to Bak extension.