pure object-oriented

runs on all major platforms

a clean look and feel

good developer tools

low memory footprint

stable core with large test suite


For OS X, Linux, and Windows. The zip files contains all necessary files. Just download and run the executable.


Pharo's goal is to deliver a clean, innovative, free open-source Smalltalk-inspired environment. By providing a stable and small core system, excellent dev tools, and maintained releases, Pharo is an attractive platform to build and deploy mission critical applications.

The license of Pharo is MIT with some original parts remaining under the Apache License. All contributors are required to sign our license agreement. For more information see the license page.

Get started now

Run the executable after unzipping – no installation required!

Follow the integrated, interactive tutorial