This page has links to online and downloadable documentation for ActiveReports 11 and ActiveReports 10. For versions prior to ActiveReports 10, follow the link here.

ActiveReports 11
ActiveReports 11 User GuideOnline HelpPDFCHMMSHelp3
ActiveReports 11 Server User GuideOnline HelpPDFCHMMSHelp3
ActiveReports 11 Server Designer User GuideOnline HelpPDFCHMMSHelp3
ActiveReports 11 Server RESTful API GuideOnline Help   
ActiveReports 10
ActiveReports 10 User GuideOnline HelpPDFCHMMSHelp3
ActiveReports 10 Server User GuideOnline HelpPDFCHMMSHelp3
ActiveReports 10 Server Designer User GuideOnline HelpPDFCHMMSHelp3
ActiveReports 10 Server RESTful API GuideOnline Help