What services are there for managing projects and tasks on it?

Question

Project management

Hello toaster!
Registered in a huge number of task management services, but all of them are aimed at the interaction of employees with each other.
I would like to ask you if you use any CRM systems / services for managing projects and tasks on it, with separation of access rights and the presence of managers?
Requirements:

• employees are visible only to the project manager
  
• setting tasks for the project
  
• the ability to conduct personal files for project managers
  
• employees see only the tasks assigned to him
  

PS various financial transactions are not needed.

Answer 1

I recommend Trello and Basecamp

Answer 2

redmine jira

Answer 3

we use intasker.com - analogue of Basecamp and Trello