Zoho One - One platform for all your business needs. CRM, Mail, Finance, Support, Marketing, HR, Office Suite, Chat, Project Management, Business Intelligence, Custom Solutions, etc.
Having used Zoho for 3 years, I can say that Zoho is nice because it's cheap, but you get what you pay for. It feels like the less-good version of G Suite in almost every way.
https://www.zoho.com/one/
NB: I work for Zoho.