tawk.to - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page
VOGSY - Professional service automation tool built on Google G Suite
ChatWoot - Open-source omnichannel customer engagement platform
Office Timesheets - Professional Services Automation
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
TimeControl - TimeControl timesheet software that is fast to implement and easy to use to track time for finance, payroll, HR and Project Management.