Interactive coding lessons in the browser
Write and run real code in browser lessons without installing a compiler or configuring a local IDE.
Coddy
Learn to code 20+ languages in a fun way with short lessons
The overview
What is Coddy?
Coddy teaches programming through short interactive lessons, browser based coding exercises, and practice across more than twenty languages. Its learning flow includes progress features and an AI tutor that offers hints, while the service also supports mobile learners.
Around the internet
What people are saying
Public experiences, questions, and discussions.
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Inside the toolkit
Key features
Courses across languages and topics
The catalog lists 126 interactive courses across 17 programming languages and topics including data structures and networking.
AI-assisted hints and exercises
Courses include interactive coding exercises, and AI hints are available when learners get stuck.
Course completion certificates
Completing a course unlocks a verifiable certificate with a unique ID.
Guided learning paths and progress
Coddy offers structured language journeys and tracks progress separately for each course.
Where it fits
Use cases
- Start learning to code in a browserBegin with a language course, write and run code in browser lessons, and use hints when needed.
- Study a language or a focused topicChoose among programming languages or topics such as data structures, graph algorithms, and networking.
- Practise with exercises and projectsUse interactive lessons, coding exercises, projects, and AI hints to practise.
- Show evidence of course completionShare the verifiable course certificate on LinkedIn, a CV, or a portfolio.
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