What open-source proxy with gui (except Squid) would you recommend?

Question

linux

Required functionality: authentication through a domain, separation of rights by domain groups, generation of detailed reports with filtering by users.

Answer 1

It's a router/firewall. And yes, he has a proxy squid.

Answer 2

I don't know any other OSS proxies besides squid. In squid, everything specified is done, except for reports, with which everyone distorts as best they can - someone uses sarg, someone uses sams, someone writes bicycles ...
True, he does not have Guy and, as far as I know, is not planned.
Use the console Luke! :)