A list of Twitter-friendly OAuth examples, organized alphabetically by programming language.

PHP

• Code (GitHub)
• Live example
• Docs (Google Docs)
• PECL example

• OAuth and Sign in with Twitter Integration by Jaisen Mathai

Python

• Google App Engine example code (GitHub)
• Live example
• AppEngine-OAuth-Library by Mike Knapp (more)
• Django example
• Pylons example (GitHub)
• Django delegated auth example (GitHub)

Ruby

• Richard Taylor offers this example: Code | Live demo
• Michael Bleigh offers this library: Code

.NET

• Shannon Whitley offers this example: Code | Live demo

Java

• Twitter4J code examples by Yusuke Yamamoto
• Signpost by Matthias Käppler

Perl

• How to Code Twitter’s OAuth Using Net::OAuth and Perl by Jesse Stay
• Twitter OAuth using Perl by Scott Carter

Flex

• Dan Petitt offers this OAuth example for Flex: Link