Thoughts on Employee IT Self Service portal?

Hello all,

My manager has recently gotten it in their head that we really need a self service portal for IT things. Stuff like allowing users to access a knowledge base and download basic software. I know theres the big ones, like Solarwinds and ServiceNow, but I was wondering what everyone else uses? Our ticketing system, sadly, does not have this included.

Any info you have on maybe a cheaper, or cleaner (I haven't used ServiceNow in a long time but I remember it being very cluttered but that could have been on us) service for this would be appreciated. Mostly looking for personal testimonials.

Thanks in advance.