@shushanik_shahbazyan well it's very similar to Slack with private and public channels, direct messages, file sharing etc. I like a lot Pumble's interface. It's very easy to communicate quickly within team. You should definitely check it :)
@shushanik_shahbazyan Not primarily but utilizing it with a fully remote team that is spread across many timezones we do leave notes, action items, and communicate through threads on specific projects. I would say it helps to add context to the conversation. I guess that wasn't really what you were looking for.