At my workplace, we've started using Confluence for some projects and it's been incredibly productive. I still loathe JIRA but Confluence has been incredibly good for technical collaboration and documentation.
My experience as well - We are all in on Atlassian.
Confluence is brillient, bitbucket is meh but OK and JIRA is an utter tire fire both in how it's built and what it does but PHB's and PHB-shaped objects love it.
