What a incredible e-mail from Atlassian, cloud first. Not everyone wants to use the cloud. I worked with Confluence and Jira over ten years now. Time for alternative Wikis. I am a little bit sad about the cloud first strategy. Confluence and Jira are pretty cool tools.
Time for alternative Wiki´s
This Wiki very close to Confluence. But one feature is missing
BlueSpice based on MediaWiki but it have a lot more features and a good Editor.
Multi Sites only available in the enterprise version.
Also look at tiki.org but is more than a wiki
For Jira alternative