Best live chat + help desk + knowledge base software?

Hey everyone,

Happy Monday! Wondering what some of you guys are using for a customer support SaaS platform that covers these?

• Live Chat
• Help Desk (ticketing, etc)
• Knowledge Base

So far, we are using Freshchat/Freshdesk, but looking to migrate to one of the following:

• HelpScout
• Intercom

Curious to know what you guys are using and/or would recommend :)