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Thonny vs Pyzo: catalog facts
Thonny	Pyzo
Free Free and open source.	Free Free and open source under the BSD-2-Clause licence.
Windows, macOS, Linux	macOS, Linux
Bundles Python, so there is nothing else to install Simple debugger suited to learning	Works with any installed Python interpreter, including Conda Editor and interactive shell in one window
Focused on Python only Fewer features than full professional IDEs	Python only Fewer features than large IDEs such as PyCharm
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: BSD-2-Clause
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.