You could have downloaded WebSDKPackager 1.2.1 for Mac from our software library for free. The bundle identifier for WebSDKPackager for Mac is com.sonyericsson.web.sdk. The application lies within Developer Tools, more precisely Webmaster Tools. This free Mac app was originally designed by Sony Ericsson Mobile Communications AB. The most popular version of WebSDKPackager for Mac is 1.2. The WebSDKPackager installer is commonly called sonyericssonwebsdkpackager.zip.
From the developer:
WebSDK Packager is a suite of mobile development tools allows both web and mobile developers to create applications for Sony Ericsson phones running Google Android™ OS or Symbian™ OS.
WebSDKPackager enables rapid development by utilizing PhoneGap APIs on Android and Symbian.
You may want to check out more Mac applications, such as MacCVSClient X, AcidSearch Installer or AlbumEnabler, which might be related to WebSDKPackager.