You don't need an expensive Adobe subscription to open Illustrator files. Here's are three free or low-cost alternative ways to open AI files.

How to Open a PDF With Reader & Internet Explorer. Adobe's portable document format (PDF) has become a standard for exchanging and distributing documents. PDF files look like the original document ...

Intuitive Adobe PDF creation tools are integrated into the Windows desktop and Microsoft Office applications, so users can convert Office documents to Adobe PDF without leaving the application in ...