Server Clock

Server-Sent Events, <canvas>, PHP   [source]

Offline eBook Reader

Google Chrome Background App feature, AppCache, Server-Sent Events, CSS columns, PHP   [source, install]

Google Data APIs

Base Data API

Recipe Application   [source]

Recipe Application (PHP 4)   [source]

Sample demonstrating inserts/updates/deletes and querying items   [source]

Book Search Data API

Books API Browser   [source]

Calendar Data API

Client library example   [source]

Documents List Data API

Client library example   [source]

OCR demo   [source]

Picasa Web Albums Data API

Client library example   [source]

Other

Hybrid Protocol (OpenID + OAuth)   [source]

Google Data APIs

Google Data APIs

OAuth Example - Google App Engine

OAuth Example   [source]

Google Data APIs

Documents List Data API

Google Documents Viewer (OAuth)   [source]

Mashups & Other

App Engine Calendar API + Contacts API Event Creator   [source]

Google Data APIs Feed Fetcher - App Engine   [source]

Google Visualization API

App Engine Samples

Static Table Example   [source]

Dynamic Table Example   [source]

Google Data APIs

Documents List Data API

DocList Manager   [source]

Google Data APIs

For additional JavaScript samples, see the Google Data APIs Samples page.

Geo/KML

Google Earth

Tour of the continents with New York Times placemarks

OAuth Playground   [source]

A tool for experimenting with the Google Data APIs and debugging your OAuth integration