Chat rooms per language, a general channel for the whole project, and testers sitting with the linguists who own the strings they're testing.
Save time with better communication
Linguists and testers resolve issues together, in context, instead of a bug bouncing through a ticket days later. No need to route every question through the publisher or developer.
Pseudonymous, not anonymous
Linguists post under a pseudonym assigned by the Project Manager. Identities are shielded from broad exposure, but the PM always knows who is who, so accountability never gets lost.
The PM sees everything
One place, every thread, every language. The Project Manager steers small things before they get big, across time zones, without chasing updates.
Solo, you get good linguists and testers. Together, you get one team that keeps getting better.