What is .CBL file extension?
Source code file written in COBOL (COmmon Business-Oriented Language), one of the oldest programming languages still in use; often used for writing programs for business, accounting, and administration; must be compiled by a COBOL compiler for the target system before run.
Several different standards for COBOL exist, beginning with COBOL-68 and including COBOL-74, COBOL-85, and COBOL 2002. Therefore, you should make sure your text editor and compiler support the appropriate version of COBOL you're using.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.