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Education software

Praxly

A free, in-browser code editor that teachers and students use to read, write, run and debug code — built with James Madison University’s Department of Computer Science.

The Praxly project page at James Madison University
The Praxly 2.0 code editor, with its language sidebar, console and AI assistant panel
The Praxly project page on a phone
Location
James Madison University
Client since
2026
Status
Ongoing

About the client

Praxly is a free teaching tool from the Department of Computer Science at James Madison University, supported by a National Science Foundation–funded partnership with CodeVA that helps career and technical education teachers earn computer science endorsements.

What we delivered

  • An editor that runs entirely in the browser
  • Six languages: Praxis and AP CSP pseudocode, blocks, Python, Java and JavaScript
  • Live translation between languages as you type
  • Running and debugging in place
  • An optional AI assistant, with sign-in

The story

  1. The challenge

    Teachers preparing for the computer science Praxis exam, and the students they go on to teach, work in pseudocode — a simplified way of writing programs that, on paper, cannot be run. That makes it hard to check your understanding or see what a program actually does.

  2. What we did

    Praxly makes pseudocode run. Version 1 paired a block editor with a text editor for Praxis pseudocode. We work with the Praxly team on version 2, which grows the editor to six languages: write in whichever one your course uses, see the same program in the others as you type, then run and debug it in place — with nothing to install and no account required.

    Version 2 also adds an optional AI assistant, with sign-in through Google or a Praxly account.

  3. The result

    Praxly is free for anyone to use at praxly.cs.jmu.edu, and the research behind it has been presented at the SIGCSE Technical Symposium in 2025 and 2026.

Screens

More from the project

  • The Praxly project page at James Madison University

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