Confluence is a wiki that provides one place for technical teams to collaborate: create, share, and discuss your ideas, files, minutes, specs, mockups, diagrams, and projects. A rich editor, deep Office and JIRA integration, and powerful plugins help teams collaboratively develop technical docs, intranets, and knowledge bases.
This is one of the most significant updates to Confluence since its initial release in 2004. With a brand new WYSIWYG editor and wide-ranging user interface improvements, this is the most productive and user-friendly version to date.
URL:Content and Social Collaboration Software | Atlassian