I have small company, i'm web agency and i see some my competitors use whmcs to manage client and project.
In the past i use sometimes whmcs but i dont if I can do all this things (I'm avaible to pay module):
generate contract and signup
client open ticket
chat conversation become a ticket
admin can send quote, client can accept or decline
admin create project for each client when accept a quote
in project there is a way to talk like a discussion, share document and files and sensitive data
integration wordpress for some area like user login, ticket area, quote, project
client can write email and open automatically a ticket in a dedicated categories like Quote
different client usergroup like client, possible customer
in ticket area, if admin request share sensitive data like cpanel, domain, plesk and ftp
invoice with sectional and automatic counter based on the sectional
invoice split payment, for example admin setup 50% in advance and 50% end of job
Thank you so much..