For specific older releases of the modern IDE (e.g., version 2.0.1 or 2.1.0), visit the Arduino IDE GitHub Releases page . Scroll to your desired version and click Assets to find the installer for Windows, macOS, or Linux.

The most common "old" version is the 1.8.x series, often called the "Legacy IDE". You can find Arduino IDE 1.8.19 by scrolling down to the "Legacy IDE" section on the Arduino Software page .

Arduino Old Version Free Download: How to Get Legacy IDEs While the latest Arduino IDE 2.x offers modern features like autocomplete and a live debugger, many enthusiasts and professional developers still prefer downloading older versions of Arduino for stability and compatibility. Whether you need the rock-solid or an even older release for a specific legacy library, you can still download them for free from official sources. Where to Download Old Arduino IDE Versions

Download old verison of Arduino 2.x - IDE 2.x - Arduino Forum