Zulip
Zulip is an open source chat and collaborative software created by Jeff Arnold, Waseem Daher, Jessica McKellar, and Tim Abbott in 2012. Today, it is one of the free and open source alternatives to Slack, with over 60,000 commits contributed by over 1000 people.
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
Ichi ndicho chikonzero munhu angati Zulip seyekutengesa-yemahara ye "Open-source mapurojekiti, Tsvagiridzo munzvimbo yezvidzidzo, semapoka ekutsvagisa, kudyidzana kwemasangano, nezvimwewo, Masangano anoitwa nevadzidzisi vega, senge purofesa anodzidzisa kirasi imwe kana anopfuura, Zvisiri-purofiti isina vashandi vanobhadharwa kana Nharaunda nemasangano evanhu". Zvichida 3 block inogona kunge yakakodzera kune izvozvo?