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CodeSkulptor3
CodeSkulptor3 · founded 2012
What it is
CodeSkulptor3 is a browser-based Python interpreter designed for teaching, particularly to beginners. The web interface combines a Python editor with a console that displays printed output and error messages. It implements a subset of Python 3 and adds the SimpleGui, SimpleMap, and SimplePlot graphical libraries. The tool is featured in Coursera’s “Fundamentals of Computing” course, and its maker credits Scott Rixner with building it. Users can save programs to cloud storage under a URL or download them to a computer; anyone with a saved program’s URL can access its file. Collaborative editing sessions are available, but they are temporary and are deleted in about a day. Listed supported browsers are modern Google Chrome, Mozilla Firefox, and Apple Safari. The supported Python subset excludes constructs such as `try-except` and `with`, and external files can be loaded only over HTTPS. The maker says users are anonymous and no personal information is collected. Saved files are stored indefinitely and used to provide the service and for anonymous educational research. CodeSkulptor3 is free to use.
For and against
For
- Free to use in a browser
- Editor and output/error console included
- Adds three graphical libraries
- Programs can be saved or downloaded
- Supports temporary collaborative editing
Against
- Implements only a subset of Python 3
- Collaborative sessions are deleted in about a day
- Anyone with a saved file URL can access it
The verdict
CodeSkulptor3 offers a free, browser-based learning environment with graphical libraries and collaborative editing. Its Python subset and temporary sessions are important constraints to consider.
Who it suits
It suits learners and instructors seeking a browser-based environment for introductory Python work, including users of the listed course.
Plans and prices
Free
Freely available for all to use
Read 7 Oct 2026 · py3.codeskulptor.org
On the record
- Analytics
- The site uses Plausible Analytics for aggregated usage trends, which the maker says collects no personal data and uses no cookies.py3.codeskulptor.org · read 7 Oct 2026
- Browser support
- The documentation lists modern Google Chrome, Mozilla Firefox, and Apple Safari as supported browsers.py3.codeskulptor.org · read 7 Oct 2026
- Collaboration
- Users can create or join collaborative editing sessions, which are temporary and are deleted in about a day.py3.codeskulptor.org · read 7 Oct 2026
- Course use
- It is featured in the Coursera course “Fundamentals of Computing.”py3.codeskulptor.org · read 7 Oct 2026
- Editor and console
- The browser interface includes a Python editor and a console that displays printed output and error messages.py3.codeskulptor.org · read 7 Oct 2026
- HTTPS requirement
- Programs can load external files only over HTTPS; resources hosted by CodeSkulptor support HTTPS.py3.codeskulptor.org · read 7 Oct 2026
- Integrations and services
- The maker lists Google Cloud Storage, Firebase Realtime Database, and Google Maps Platform among the services CodeSkulptor3 uses.py3.codeskulptor.org · read 7 Oct 2026
- Maker credit
- The maker credits Scott Rixner with building CodeSkulptor3.py3.codeskulptor.org · read 7 Oct 2026
- Privacy
- The maker says CodeSkulptor3 does not collect personal information and users are anonymous.py3.codeskulptor.org · read 7 Oct 2026
- Purpose
- CodeSkulptor3 is a browser based Python interpreter created for teaching Python, especially to beginners.py3.codeskulptor.org · read 7 Oct 2026
- Python limitations
- The documented subset does not support constructs including `try-except` statements and `with` statements.py3.codeskulptor.org · read 7 Oct 2026
- Python support
- It implements a subset of Python 3 and adds the SimpleGui, SimpleMap, and SimplePlot graphical libraries.py3.codeskulptor.org · read 7 Oct 2026
- Save and download
- Users can save programs to cloud storage under a URL and download a saved program to their computer.py3.codeskulptor.org · read 7 Oct 2026
- Saved file use
- Saved files are stored indefinitely, and the maker says they are used to provide the service and for anonymous educational research.py3.codeskulptor.org · read 7 Oct 2026
- URL access
- Anyone with a saved CodeSkulptor3 URL can access the file associated with that URL.py3.codeskulptor.org · read 7 Oct 2026
