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Pharo vs Squeak: catalog facts
Pharo	Squeak
Best for: Developers curious about live, Smalltalk-style object-oriented programming	Best for: Learning Smalltalk, live programming and teaching programming ideas
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Live environment with immediate feedback while coding Debugger can restart methods and create code on the fly All 4 strengths for Pharo Live environment with immediate feedback while coding Debugger can restart methods and create code on the fly Very small, consistent syntax Free MOOC for learning	Live environment where code can be changed while it runs Morphic framework for interactive graphical applications All 4 strengths for Squeak Live environment where code can be changed while it runs Morphic framework for interactive graphical applications Builds for Windows, macOS and Linux, including ARM Educational tools and free book Squeak by Example
Image-based workflow differs from file-based tools most developers know Smaller ecosystem than mainstream languages	Image-based workflow differs from file-based editors and tools Smaller community than mainstream languages
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for Pharo pharo.org Catalog checked October 2, 2026	Official website Full listing and sources Sources for Squeak squeak.org Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.