For the source code or specific assets (like .tar.xz files), visit the Arduino GitHub Releases page .

The Arduino Software Page lists 1.8.19 under the "Legacy IDE" section.

Trusted mirrors such as SourceForge also host verified versions. System Requirements & Compatibility

While the newer Arduino IDE 2.x offers modern features like autocomplete and a live debugger, many "power users" prefer 1.8.19 for its reliability and simple, streamlined interface. Where to Download Arduino IDE 1.8.19

The is the final stable release of the "classic" 1.x series of the Arduino Integrated Development Environment. Often referred to as the "Legacy IDE," it remains a popular choice for developers who value stability, lower system resource usage, and compatibility with older operating systems.