Instead of process explorer, I highly recommend people to use Process Hacker[0]. It's open source, contains a lot of information missing from process explorer, and has a much cleaner user interface.
Another great one is WinObjEx64[1], which allows exploring the NT namespace.
I like that Process Hacker has broader set of features, but what I am missing compared to Process Explorer is the the ability to quickly identify the process by using the "sniper" and the integration with VirusTotal.
I wish there was a single tool with all the bells and whistles :) Maybe I should start contributing to FOSS.
ProcessHacker has both VirusTotal integration and the sniper feature, at least in the nightly builds (Called Process Hacker 3). I highly recommend using the nightly builds, they are packed with amazing features.