.au3 file: how to open it on Windows

5 Windows apps register the .au3 extension. Install one of them to open the file with a double-click.

Notepad3
Notepad like text editor based on the Scintilla source code.

Free 7.26.602.1 84.4K ↓ ★ 6.7K
AutoIt
A freeware BASIC-like scripting language designed for automating the Windows GUI and general scripting.

Free 3.3.18.0 154.5K ↓
Sublime Text 4
Sublime is a sophisticated cross-platform text editor for code, markup and prose.

Proprietary 4.0.0.421500
EverEdit
Professional Text & Source Editor

Proprietary 4.5.0.4500
Text Editor Pro
Powerful text editing tool

Free 37.4.0