Microsoft+sharepoint+designer+2010+64bit+portable
: Third-party portable apps often crash when switching between "Code" and "Design" views or fail to interact correctly with the .NET Framework required for SharePoint connections. Official Download and Installation
While Microsoft offers an official SharePoint Designer 2010 (64-bit) installer, there is of this software. microsoft+sharepoint+designer+2010+64bit+portable
If this is a technical blog or reverse-engineering post, it probably discusses: : Third-party portable apps often crash when switching