I'd suggest Weblate which is FLOSS as well.

Features: https://weblate.org/en/features/

https://weblate.org/en/hosting/

Not in favour of proprietary software Crowdin.
Compare both their privacy policy yourself:

• https://support.crowdin.com/privacy-policy/
• https://weblate.org/en/terms/

As @comradekingu mentioned somewhere Crowdin is not for opensource projects, since it specifically focus on non-profit opensource projects which means it requires projects to have no source of income, or profit motive. (see criteria no4)

I'm actually impressed by Notesnook privacy related blog posts e.g. Notesnook & email, DuckDuckGo related, 2FA, WhatsApp related.
IMO for such privacy centric software it doesn't sound good to use proprietary software when we already have opensource alternative.

#951 hope they support it anytime soon 😞

Hello, the localization branch has been merged into the master, how can I contribute translation?