It is, but KS also has some bits added. I use process hacker portable 99% of the time but I also have process explorer available - I happen to like the TCP/IP tab in PE. Another one to look at is System Explorer
If you just want good network information, you could do worse that CurrPorts it has logging and also integrates with IPNetInfo Basically, this gives you the ability to right click on an ip address in currports and get a whois.
Actually no. It was initially, but wj32 (the author of ProcessHacker) wasn’t happy with the way Comodo was putting their additions in a .dll and said that violated the open source license. So to avoid any further issues, Comodo wrote their own version.