Please keep this list of libraries organized by programming language.

 

Table of Contents

Table of Contents ActionScript/Flash C++ C#/.NET Coldfusion Eiffel Erlang Java  JavaScript Objective-C/Cocoa Perl PHP PL/SQL Python Ruby Scala T-SQL VB.NET

 

ActionScript/Flash

• TwitterScript by Michael Galpin. AS3 API, originally from Twitter, now open sourced.
• SWX Twitter API by Aral Balkan.
• Tweetr by Sandro Duccesschi. AS3, supports the REST  API, Search API, and URL shortening.
• Coderanger by Dan Petitt. Flex/Air OAuth library class.

 

C++

• QTwitLib by Bradley Lackey & Maks Zolin. C++ library for Linux, Windows, and Mac.  Currently in beta.
• Twitcurl by Mahesh. C++ library which uses curl library for HTTP interaction with Twitter API.

 

C#/.NET

• Yedda Twitter Library by Yedda. Every Twitter API method has an equivalent .NET method in this wrapper library.
• TwitterooCore API by Eric Willis/RareEdge Design Group. Binary .NET library that can be used in any .NET project. 
• Twitterizer originally by DigitallyBorn, but now open source. Written for .NET 2.0.

• TweetSharp by Daniel Crenna. TweetSharp is a fluent interface to the Twitter API with an active community and full coverage of current and announced API features.

• LINQ to Twitter by Joe Mayo. An open source LINQ provider for the Twitter API
• CSharpTwitt by Himanshu Hajariwala. Twitter API library in C#

 

Coldfusion

• twitterCOM by Quinn Michaels. Twitter Library for the CFML Language.

• CFTwitterLib by Pedro Claudio. Twitter API ColdFusion Component.

 

Eiffel

• Eiffel Twitter by Jocelyn Fiat

 

Erlang

• erlang_twitter by ngerakines. An Erlang twitter client.

 

Java 

• Twitter4J by Yusuke Yamamoto.  An open-sourced, mavenized and Google App Engine safe Java library for the Twitter API, released under the BSD license.
• java-twitter by DeWitt Clinton.  Pure java interface for the Twitter API.
• jtwitter by Daniel Winterstein. Open-source pure Java Interface to Twitter. 
• Twitter Client by Gist, Inc. Java client to connect to the Streaming API.

 

JavaScript

• TwitterHelper by Daniel Glazman
• SpazCore by Ed Finkler. An open-source component library for building desktop and mobile apps in web runtimes (AIR, Titanium, WebOS). Includes a Twitter library.

 

Lasso

•  [twitter] by Jason Huck.

 

Objective-C/Cocoa

• MGTwitterEngine by Matt Gemmell.  Integrate Twitter support into your Cocoa app.
• Canary by Nick Toumpelis. It is a fully-fledged client, with multi-user support.

 

Perl

• App::Tweet by Joshua McAdams.  Tweet on Twitter from the command line.
• Net::Twitter by Marc Mims.  Perl interface to Twitter.
• Net::Twitter::Lite by Marc Mims. Lightweight Twitter API library.
• Twitter::Shell by Daisuke Maki.  Twitter from your shell.

 

PHP

• My Twitter by Andres Scheffer. Set and retrieve a Twitter user's status.
• Twitter by Felix Oghina.  Update the status of a Twitter user.
• TwitterLibPHP by Justin Poliey.  Manipulate a Twitter user account.
• Arc90_Service_Twitter by Matt Williams.  Open source Twitter API client.
• PHP Twitter by Aaron Brazell, original code from David Billingham.
• PEAR Services_Twitter by Joe Stump and David Jean Louis.
• PHP Twitter by Tijs Verkoyen. BSD Licensed.
• Twitter-async by Jaisen Mathai. Wrapper for Twitter's OAuth API which provides asynchronous calls.
• API CodeIgniter Library by Eliot Haughin.
• Phirehose by Fenn Bailey. A library for the Streaming API

 

PL/SQL

• OraTweet by Noel Portugal. PL/SQL procedures to get friends timeline and post updates.

 

Python

• python-twitter by DeWitt Clinton. This library provides a pure Python interface for the Twitter API.

• python-twyt by Andrew Price. BSD licensed Twitter API interface library and command line client.
• twitty-twister by Dustin Sallings.  A Twisted interface to Twitter.
• twython by Ryan McGrath. REST and Search library inspired by python-twitter.
• Tweepy by Josh Roesslein. Supports OAuth, Search API, Streaming API. 

 

Ruby

• Twitter4R by Susan Potter.  Open-source Ruby library for the Twitter REST API.
• Twittery by Chris Ledet.  Lightweight class for Twitter's API.
• Twitter by John Nunemaker.  Command line twits and an api wrapper using Hpricot.
• Grackle by Hayes Davis. Supports OAuth, Search API, REST API. Resilient to API changes.
• TwitterLand by Bradley Joyce. Supports the Twitter-related APIs from Follow Cost, Twitter Grader, Mr Tweet, Twinfluence, and TwitterCounter.

 

Scala

• talking-puffin by Dave Briccetti.

 

T-SQL

• SQL# (SQLSharp) by Solomon Rutzky. A SQLCLR library of Functions and Procedures, some being for Twitter.

 

VB.NET

• TwitterVB by Duane Roelands.