I have developed my custom powershell snapin. I wanted to write help for that. Is anyone aware about any tool?
I have already tried ps cmdlet help editor from codeplex (https://pscmdlethelpeditor.codeplex.com/releases/view/573966), but that is not working for me. This tool is able to load from only module (module class). When I try to load a snapin (module class), then it throws following error "Cannot bind argument to parameter 'name' because it is an empty string"
Please let me know in case anyone is aware about any other tool
Unless you have a strong reason to support V1, you should prefer creating a module. Most snapins work just fine as a module and installation is simpler.
That said, the tool you found is the best free tool I know of - I've used it successfully but it had some small issues. Maybe you can report a bug or better, fix the bug for yourself.
Other options:
An interesting approach - write a script to generate your ps1xml (way easier than writing ps1xml directly): https://github.com/nightroman/Helps
Here is a promising non-free tool: http://www.sapien.com/software/powershell_helpwriter