PhatStudio is a Development software developed by J Stone. After our trial and test, the software is proved to be official, secure and free. Here is the official description for PhatStudio:
BS Editor: PhatStudio is a free add-in for Microsoft Visual Studio (VS2005, VS2008 and VS2010 are supported) that lets you quickly navigate files in large projects with just a few keystrokes. It lets you navigate files either by the Open File dialog (bound to Alt+O by Default), or the PhatStudio Explorer tool window.
It also includes a header flip/switch to related file feature, bound to Alt+S by default. Header flip will switch between a .cpp file and corresponding .h/.hpp file. It will also switch between other related file types, such as aspx/aspx.cs and ascx/ascx.cs. you can free download PhatStudio 1.07 now.