You are downloading the Sharit Extension XAP file v188.8.131.52 for Windows Phone. Sharit Extension is a free and useful Social app: This is an extension to integrate your Sharit app into the "Me" tile. Using this extension you will be able to use Sharit to post updates and ... You can now download the offline XAP file to install & try it.
Download Locations for Sharit Extension 184.108.40.206 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Sharit Extension XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.