Do anybody know a good option to manage the various locales of a webextension? At least locally, and if possible online to allow other translators to provide input. BabelZilla WTS is great, but I’m not sure its only developer will release something compatible with webextensions messages.json anytime soon. POEditor has a free plan for open source software, but does not support messages.json format.
The projects don’t need to be that big: Crowdin accepted my request for a open-source licensing plan for one of my add-ons, almost a year ago, a few months after it being published in AMO, and having then no more of 300 daily users.