These are small plugins that are not included with Process Hacker by default.
1) Checkout the main repository into a folder somewhere (For example: C:\ProcessHacker\
)
3) Run C:\ProcessHacker\build\debug_debug.cmd
4) Download the plugins-extra repository.
5) Copy into the folder you created earlier (C:\ProcessHacker\
)
Your folder should look like this:
You can now just open the plugins-extra\ExtraPlugins.sln
solution just like the plugins\Plugins.sln
solution. You can also set the default startup project inside Visual Studio and press F5 to run/debug that specific plugin with breakpoints or use the build menu to build all plugins.
What about a simple possibility to install any of them without installing several gigabytes of Visual Studio?
Install the "Build Tools for Visual Studio 2017" (170mb) and run build\build_release.cmd