Want to compose your SMSes using real keyboard instead of using your cell phone's tiny keyboard ? Are you mostly behind the PC and wants to get notified when you have an incoming call/sms right at your PC ? Want to compose SMSes from work/school using your PC? Don't want to spent money paying for such apps? If so, Brenk PC Notifier is what you want. Its free! (supports android 1.5 and higher)

Do you know how many SMS you have sent this month? Threaded message dialogs don't make counting easy. This app will help you tracking how many sms you have sent and received. It even provides counting for the past months. No more busting your sms quota!
Note: Works only with the build-in android sms app!
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One of Top500 App: 4.9★Rating, Full Featured, No Ads: Send Text/SMS after rejecting/declining incoming as well as ★Outgoing calls, Fast Redial, Template+Buddy pairs. Bunch of features in one app. One of Top 500 apps in its category on Android Market.

GoJack allows you to send free SMS messages from mobile phones, freely, without any limitation and for ever.

Codes and decodes texts and SMSs in morse code of sound, light, vibration and symbols. Allows for custom encryption codes shared with your friends for an encrypted SMS communication.

No more no-show clients! Book your clients and have text messages (SMS) automatically sent to them before their appointment.

Control your phone everywhere by chatting with it and receive important notifications in your chat box, what do you need just two Gmail accounts, One for the phone and the other for you to send commands to your phone (the phone Gmail account must be in your Gmail account contact list) .

Take control of your incoming calls and SMS. It will handle the incoming calls and SMS for you and personalize your approach to the callers - answer with a busy tone, send a kind SMS, hide call logs.

bikeSMS reads SMS messages to you through your headset or built in speaker.

bikeSMS reads the caller name (where available) or the last three digits of their number and their message to you without the need to remove helmet & gloves, pull over and check.

mspn is a indian social community with amezing factors like Free Song dedication by IVR, send free sms, create groups, invite peoples to join them, chat rooms, and many more social functions. it is very easy to use.
In registration process mobile number verification is required.

Manage calls and messages in a smart way!

SMS Notifier (SMS Popup) displays your SMS or message in a smart and simple way. It provides a better status bar notification and SMS popup with quick reply, delete and mark as read options. A very small and low memory consuming app. You can customise SMS notifier very easily.

Its ad free version of SMS Notifier(http://slideme.org/application/sms-notifier-0). SMS Notifier Pro (SMS Popup) displays your SMS or message in a smart and simple way. It provides a better status bar notification and SMS popup with quick reply, delete and mark as read options. A very small and low memory consuming app. You can customise SMS notifier very easily.

An innovative app that offers you the ability to view the location of incoming and outgoing calls as well as incoming and outgoing text messages.
SMS-Call Plus encapsulates features that the conventional inbox and call log lack.

Makeloop lets you send your contacts questions such as Yes/No and/or Poll questions via SMS and/or e-mail.

This Android app is ideal for team events, parties, nights out and even for use in the business sector. It can organise events such as meetings, parties or conferences. It is a fantastic tool for SMS marketing.

Freaky SMS is an application that can send many sms at once with the same format with just one touch.

Secure Message Box, the guardian of your sensitive SMS!

Keeping your Private life Private

BubbleBuzz is specially designed for android users to customize various incoming notifications. It assigns colorful bubbles to SMS, MMS, Missed Calls, Gmail, Gtalk messages. Definitely more fun than the simplex LED notifications!

myTranslator is a translation application based on Google Translate API. Supports 58 language pairs. You can send the translated text via Email, SMS, TweetDeck, IM, etc.,