What services (SaaS) do you use for customer relationship management?

Question

Project management

Friends, please tell me solutions for the following tasks:
personal accounts with the ability to inform about the rest of advertising budgets, used audiences, creatives, etc.
the total number of generated leads (MQL/SQL) (possibly via API from trackers)
general analytics for the project
data about the current work for the client
Well, the rest of the nice things to make the agency client feel chosen and important.
Thank you!