What is a free and easy-to-learn collaboration and team building platform?

Question

Project management

Excuse me for not speaking Russian)) but it’s clearer))
I want to organize a certain team for joint software development and communication + so that I can post different docks in public for guests.
And I need some kind of platform for this, already ready. Something like a community on LiveJournal, or on Facebook there seems to be some such topic, but more functional than LiveJournal and not as fancy as on FB.
Is there anything definitively good on this topic? I really don’t want to make things on my host, I just want to turn up and use it)))
Maybe Discord will do? What do you think? Or some Slack ... I almost never used it, a little at a loss.
Thank you.

Answer 1

More like you need a telegram channel/chat or slack. Although for normal work with an adequate team, something like a gitlab is enough.

Answer 2

Jira + Confluence

Answer 3

https://www.jetbrains.com/youtrack/
https://www.jetbrains.com/hub/

Answer 4

• For collaborative GitLab development
  
• For communication, Discord or Slack are fine. There are analogues like RocketChat.
  
• To organize the Trello or Redmine process (the interface is old, but there are many different settings for posting to the public and for the team).