Open Source

We at the Guardian try to be as open and transparent as possible. That means developing in public repositories where anyone can see our work. You can explore our source code on GitHub.

What we work with

Languages

• Scala
• TypeScript
• Kotlin
• Swift
• Python

Frameworks

• React
• Preact
• Play
• Astro (which we use for this very site!)

Tools

• Storybook
• Elasticsearch

There are plenty more where these came from, but they are good starting points. And if you want to see our code in action…

Here’s 10 recently updated repositories:

1. grid

   (1457 stars - updated Jul 20, 2026)

   The Guardian’s image management system

2. csnx

   (45 stars - updated Jul 20, 2026)

   Monorepo for Guardian UIs

3. guardian-engineering-site

   (34 stars - updated Jul 20, 2026)

   Code for theguardian.engineering site

4. cdk

   (22 stars - updated Jul 20, 2026)

   Generic Guardian flavoured AWS CDK components

5. janus-app

   (12 stars - updated Jul 20, 2026)

   Google-backed AWS account access

6. security-hq

   (12 stars - updated Jul 20, 2026)

   Centralised security information for AWS accounts

7. pan-domain-authentication

   (11 stars - updated Jul 20, 2026)

   Helper to provide a common federated authentication for all services within a domain (AKA Panda 🐼)

8. support-service-lambdas

   (11 stars - updated Jul 20, 2026)

   Lambdas covering supporter operations, mostly in life operations

9. mobile-purchases

   (9 stars - updated Jul 20, 2026)

   Handle subscriptions on iOS and Android apps

10. service-catalogue

    (8 stars - updated Jul 20, 2026)

    Provides an overview of P&E services and related metadata