PST Tool 0.61 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free program was originally developed by Microsoft.
The PST Tool installer is commonly called PST Tool.exe, PST_0.43.exe, PST_0.54.exe, PST_0.61.exe or PST_0.66.exe etc. The program lies within Photo & Graphics Tools, more precisely Viewers & Editors. The most popular versions among PST Tool users are 1.0 and 0.6. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
PST Data Structure View Tool (PSTViewTool) is a tool supporting the PST file format documentation effort. It allows the user to browse the internal structures of a PST file.
PSTViewTool is a MFC/C app developed in Visual Studio. Other than MFC, it has no external dependencies.
PSTViewTool is largely complete with respect to its goals, and it is no longer actively being enhanced. However, patches and bug reports are welcome.
You may want to check out more software, such as BetaVare Merge PST tool, BetaVare Split PST Tool or SameTools OST to PST Converter Tool, which might be similar to PST Tool.