Indeed, if it wasn’t for its reliance on .NET, it looks like PowerShell could be a massive improvement over Unix shell.
Some consider not relying on C a massive improvement.
There are projects like NuShell that are similar to PowerShell but don't rely on .NET.
There is nothing like PowerShell.
I agree that all of them so far seem to be lacking in many ways compared to PowerShell, but saying they are "nothing like" PowerShell isn't a very accurate statement in my opinion.
No, that is totally accurate - there is nothing even close to PowerShell.
You were inaccurate on the other hand - what is similar to PowerShell ?
Structured object piping, for one. What is this thread about again? Oh right, piping.