Follow below steps .:

1. Install “Airdroid” on your Android Device from the Android Market, its free so install it now. simply click on the Airdroid and you will taken to the market and their you have to click on Install. Its compatible with many latest Android version so that will be no problem.

APK Downloader 

Powered by Evozi
Original Made By Redphx AKA codekiem

Have you ever wanted to get your hands on the latest game, only to find that the Android Market thought it wasn't compatible with your phone?

Maybe you don't have a Tegra 2 device, but youre're pretty sure an Adreno 220 could handle it still.

Have a Kindle Fire and want access to more than just the Amazon AppStore?

Until now you've been stuck, but a new Chrome extension called APK Downloader will allow you to download an apk file from the Android Market directly to your desktop rather than to your device.

You'll need the latest version of Chrome with SSL error notifications disabled, then you supply your device ID, email address and password (all stored locally on your computer to grab the Android Market cookie).

From there you pick the app you want and you'll have the apk file on your computer, allowing you to sideload it onto any of your Android devices! It is a quite a handy little tool, but we'll be interested to see if anything is done to block this circumvention of the device rules. - text by Brian K @ phonearena

Click Here to install now

Guide

Requirements:
Chrome 17 or later
Device ID
APK Downloader Chrome Extension
STEPS:

1. Make sure you have a Google Chrome installed on your PC.
2. Download and install the Device ID on your Android device.
3. Download and install the APK Downloader Chrome Extension.
   
   
   
4. Disable SSL error warnings
   • Close Google Chrome application [Important!]
   • Right click on the Chrome shortcut and select "Properties"
   • Select the "Shortcut" tab, and add [space]--ignore-certificate-errors at the end. It should look like this:
   
   

   C:\…\chrome.exe --ignore-certificate-errors

   
   
5. Close Chrome and re-open it with the modified shortcut, then open the APK Downloader options page. If there is no warning box, then you successfully disabled SSL error warnings.
   
   
   
6. Enter your email, password, and device ID
   
   
   That's it. You can now start using APK Downloader.
   
   **After logging in, you can navigate to any Android Market App page, and click the APK Downloader icon in the Address bar to download the .apk to your desktop!
   
   
   
   

   ---

   
   http://www.androidpolice.com/2012/02/25/download-apks-directly-from-the-web-market-to-your-computer-with-the-apk-downloader-extension-for-google-chrome/
   
   http://rumah-android.com/download-apk-file-from-web-android-market-to-your-computer.html
   
   http://www.bbin.in/en/2012/02/howto-download-apks-from-android-market-port-to-playbook/
   
   http://www.symbianize.com/showthread.php?t=672277
   
   
   

   ---

   
   
   Why do I have to enter my email, password and device ID? Does it store or send my password to another place?
   The extension only stores email, device id and Android Market cookie in Chrome local storage, on your computer. To be able to get Android Market cookie, it needs your email and password to login at https://www.google.com/accounts/ClientLogin . After it's done, password is not stored, email is stored to display on Options page, Device ID and Cookie are stored for later requests. I do not send those information to another sites.

   
   Please note that in the extension there are two js file is encoded to prevent abuse.
   Use of this extension is against the Market's ToS - proceed at your own risk. The clause it violates is: 3.3 You agree not to access (or attempt to access) the Market by any means other than through the interface that is provided by Google, unless you have been specifically allowed to do so in a separate agreement with Google. You specifically agree not to access (or attempt to access) the Market through any automated means (including use of scripts, crawlers or similar technologies from time to time) and shall ensure that you comply with the instructions set out in any robots.txt file present on the Market website. 

   
   

   Powered by Evozi
   Original Made By Redphx AKA codekiem 
   

   
   

   
   

How to Download & Use Applanet :

Download Android Applications for Free with BlackMart

Black Market is another similar application to Applanet which we posted earlier and allow you to download thousands of Android Applications and Games right to your device that too for free. It’s a simple .apk app which you can transfer to your device and than install it in a normal way.

Description

• Well, it’s sole aim is to manage SU permissions. No more, No less. Give superuser privileges to apps or or remove from the one who’ve already been granted superuser permissions
• It does require you to be rooted, or atleast have a custom binary image to kick start
• The app got different version from the binary and is updated more often
• For problems or if install fails, visit http://bit.ly/9IjPgp (It will take you to XDA Developer’s page with detailed instructions. you will also get what other users opine of this must-have kinda app for rooted android phones, be it HTC, Motorola or Samsung, etc)

Description