Here it’s important to differentiate and it’s not so easy to label Zulip as fully trade-free. 1. https://zulip.com/ is NOT trade-free. There are plans that one can subscribe to in the “cloud”: https://zulip.com/plans/#cloud and even in self-hosted version: https://zulip.com/plans/#self-hosted 2. However, there is a “free-community-plan” for certain groups of people (in education or non-profit for example): https://zulip.com/help/self-hosted-billing#free-community-plan

Ko e 'uhinga 'eni 'e lava ke fakahingoa 'e ha taha 'a e Zulip ko e fefakatau'aki-ta'etotongi ki he “Ngaahi poloseki 'oku fakaava-ma'u'anga fakamatala, Fakatotolo 'i ha tu'unga fakaako, hange ko e ngaahi kulupu fakatotolo, ngaahi fengaue'aki fakakolosi-'i he ngaahi 'inisititiuti, etc., Ngaahi kautaha 'oku fakalele 'e he kau faiako fakafo'ituitui, hange ko ha palōfesa 'oku ne ako'i ha kalasi 'e taha pe lahi ange, Non-profits 'oku 'ikai ha kau ngaue fakafo'ituitui pe Commun”. Mahalo 'e fe'unga nai 'a e 3 block mo e me'a ko ia?