Open ASPX File

ASPX file extension is used to store ASP.NET server-side code. ASPX files are stored on the server and executed when web application requests them. ASPX file contain instructions which are interpreted by ASP.NET framework. ASP.NET framework was created by Microsoft to facilitate development of web server applications based on .NET framework. ASP.NET framework allows developers to write software code in any language supported by .NET framework. These include C#, Visual Basic.NET, C++/CLI, F# and many more.

Typically, users of web applications are not supposed to open ASPX files. Even when ASPX file is visible in the URL of the web applications it is not supposed to be downloaded by the browser. Instead it is executed on the web server and HTML code is delivered to user inside the browser. If due to some reason ASPX file gets downloaded instead it typically means that server malfunctioned or there is a configuration error on the server.

ASPX file is a plain text code file. To open ASPX file and view its contents you can use any text editor. You can also use development environment such as Microsoft Visual Studio to open it. But unless you want to make changes to the ASPX file and debug it opening it in Visual Studio may be an overkill.

Typically, ASPX file is accompanied by codebehind file with functions used by ASPX code. File extension of codebehind file depends on the language which was used to write ASP.NET server application. If C# was used, then file will have ASPX.CS file extension. If Visual Basic .NET was used, then ASPX.VB file extension will be used.

Typically, ASPX files could not be executed outside of the server environment. That is why accidentally downloaded ASPX file doesn’t pose danger to end user. Still, it is possible for hackers to use ASPX files with malicious intent by uploading such file to a target server and making it execute compromised code.

Open SB2 File

SB2 file extension is used by Scratch programming language to store a Scratch project, application data and required resources. Scratch is a programming language and environment which was created specifically to teach children how to code. Scratch is a block-based programming language which is available as an interpreter and visual code editing application. It is shipped for Windows, Linux and Mac OS as a desktop offline application. It is also available online via https://scratch.mit.edu website.

To open SB2 file you can use offline version of Scratch. To download it navigate to Scratch Desktop download page and select platform for which you want to download Scratch (Windows or Mac OS is available). Click on “Download” button. Once scratch is downloaded and installed, launch it and select File->Load from your computer from the main Scratch menu. Select SB2 file you want to open and click Open. You Scratch project will be loaded into Scratch Desktop environment. To export file to SB2 select File->Save to your computer, type file name and click “Save”.
SB2 file extension is used by Scratch version 2.0. If you use Scratch version 3.0 or later then SB3 file extension will be used when you Save your project to disk. Original Scratch version 1.0 or 1.4 used SB file extension.

Scratch SB, SB2 and SB3 could be compiled into various other formats such as APP for Mac OS, EXE for Windows, SWF for Shockwave. For more information about SB, SB2 and SB3 conversion visit Porting Scratch Project page.

Since SB2 file extension could be only interpreted by a Scratch environment with limited access to file system and other critical operating functions it doesn’t pose a significant risk to a user computer. Thus, it is safe to download SB2 files from the internet.