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

Ke ka lebaka lena motho a ka bitsang Zulip e le ntle le khoebo bakeng sa "Merero ea Open-source, Patlisiso maemong a thuto, joalo ka lihlopha tsa lipatlisiso, litšebelisano tsa mekhatlo e fapaneng, joalo-joalo, Mekhatlo e tsamaisoang ke barupeli ka bomong, joalo ka moprofesa ea rutang sehlopha se le seng kapa ho feta, Mekhatlo e sa lefelloeng e se nang basebetsi ba lefuoang kapa Sechaba le mekhatlo ea batho". Mohlomong 3 block e ka ba e loketseng seo?