SysInternals Tool Suite
The guys at Microsoft created a single download which contains the bulk of their tools, here is the page that describes it all: https://technet.microsoft.com/en-us/sysinternals/0e18b180-9b7a-4c49-8120-c47c5a693683.aspx and you can download the file from there.
Also, another good resource for the SysInternals tools, in an uncompressed format is https://live.sysinternals.com/ this can be a very helpful site when you just need to quickly grab a tool and don’t want to bother with downloading and unzipping etc.