The Bob Swift Atlassian HTML for Confluence app provides macros that render HTML content in Confluence pages. This guide contains instructions on how you can use the macros to display content from multiple sources. The macros available through the app are:
HTML macro - render HTML content
XSLT macro - transform XML to HTML, XHTML, or Wiki markup using XSLT
References
Administrator guide for app installation and support
Release notes for release highlights
Marketplace for downloads, compatibility, and pricing