.PL1 File Extension

File Type:
PL/I Source Code

Having trouble opening .pl1 extension? Don't panic! This page explains what pl1 files are as well as suggests programs you may use to open pl1 files. You can download these programs through this page.

What is a PL1 file?

Pl1 file extension has PL/I Source Code file type, developed by IBM, which is associated with the "developer files" category.

Programming Language One is a language invented for creating data processing programs. Applications written in this language are saved as files with the .PL1 extension. The format supports structured programming as well as recursion. It was designed to be a free-form, without reserved keywords, but still highly-structured. Programming Language One files can also have the .PLI extension. 

To learn how you can open the given file, read the information below.

pl1 file icon
File Type:
PL/I Source Code
Developer Files

How to open PL1 file?

Double click the pl1 file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .pl1 extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the pl1 extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the pl1 file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open PL1 files

  • Windows Windows
    • PL/I for GCC PL/I for GCC
  • MacOS MacOS
    • PL/I for GCC PL/I for GCC
  • Linux Linux
    • PL/I for GCC PL/I for GCC

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the pl1 file as well. Download Universal File Viewer for your OS.

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