Downloading 8051IDE 1.30 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. 8051.exe is the common file name to indicate the 8051IDE installer. ".a51" is the extension this free PC software can process.
This free software is an intellectual property of AceBus. This PC software can be installed on 32-bit versions of Windows XP/XP Professional/Vista/7/8/10/11. 8051IDE lies within Office Tools, more precisely Document management. The most popular version among 8051IDE users is 1.3. We recommend checking the downloaded files with any free antivirus.
From the developer:
Enter and modify the program source code from within the built in editor. Then assemble the source code by selecting the Assemble command.
If any errors are located the appropriate source module can be automatically loaded and the cursor placed on the line containing the error. Fix the error and move to the next error (if any). Once all errors have been fixed reassemble the code.
You may want to check out more software, such as PDF2TXT, PowerPoint to Flash or NJStar Chinese WP, which might be similar to 8051IDE.