Which billing to choose?

Question

Computer networks

I want to make a small test network with a couple of three test subscribers. Billing is needed, preferably open source or just free. The requirements are simple - a couple of tariffs, a personal account of the subscriber, a control system. What are the options?

Answer 1

Even for an offline project, I adapted BILLmanager . Up to 50 clients free of charge.

Answer 2

abills.net.ua

Answer 3

Billmanager

Answer 4

stg.dp.ua