Twitter on your Mobile Phone

Twitter anywhere you like

Twitterfone

Update Twitter using Voice

Twitsay

Record Voice Messages on Twitter

Twitter for iphone

Self explanatory

Itwtr

Another Twitter client for iphones

Pocket Tweets

another twitter client for your iphone

Twittai

mobile phone software with retweeting capabilities

CCtwit

windows mobile twitter client written in c# leveraging the .net compact framework.

Twapper

send updates from your 30boxes calendar to your phone via Twitter.

Twittelator

Integrate your iphone with Twitter

Twitterberry

Integrate Twitter with your blackberry

Vlingo

Another tool to integrate your blackberry with Twitter

Email Twitter

Get your Tweets on any email-enabled mobile phone

iTweet

Twitter Site for your iphone

Qik

A tool that let you share videos via your phone.

Jargong

Twitter client for your phone that has Flickr and other social network integration

MoTwit

Application for Palm OS

Widsets

Get content without sending SMS

Moby Picture

Post to your blog or sites like Twitter on your mobile phone

Twixr

allows you to share pictures on Twitter via your mobile phone

Locify

Send twitter updates on your mobile phone along with GPS location

Fring

Post to Twitter + other sites using your mobile phone

Abiro Jitter

Abiro Jitter (Java Twitter) is an easy-to-use and fully-featured Twitter client for mobile phones

Jtwitter

Java application which you can install on your phone

Twidroid

twitter client for android mobile phones

Twitteresce

Twitteresce allows you to access your twitter feed using your mobile phone.

Twobile

Twitter client for users of Windows Mobile Pocket PCs

Tiny Twitter

Client for any Java enabled device (that’s a bunch & includes the CrackBerry) and any Windows Mobile Pocket PC or Smartphone

Twitter SpellCheck

Check your spelling while twittering on your mobile phone