PowerShell is described as '(including Windows PowerShell and PowerShell Core) is a task automation and configuration management framework from Microsoft, consisting of a command-line shell and associated scripting language built on the .NET Framework' and is a very popular Shell in the os & utilities category. There are more than 50 alternatives to PowerShell for a variety of platforms, including Windows, Linux, Mac, BSD and iPad apps. The best PowerShell alternative is PuTTY, which is both free and Open Source. Other great apps like PowerShell are Tabby, Cmder, fish and ConEmu.
PowerShell alternatives are mainly Terminal Emulators, but if you're looking for
Shells or SSH Clients you can filter on that. Other popular filters include
Windows,
iPad,
Linux and
Mac. You can also filter by region, for example
EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to PowerShell.
PuTTY is not a shell in that sense. PuTTY is an alternative to programs like ssh which can run in powershell.