Any report writer would work with ISN as long as that report writer generates a PDF report.
As far as report writers who are directly integrated with ISN, writers we can pass the inspection information to - those are:

Home Inspector Pro
3D
Whisper
Horizon
HomeGauge
InspectIt/ReportPlus
HomeHubZone
MyReportWriter
Spectacular
Interspect/OnClarity
ReportHost
Fort Reports
Imfuna
HomeWorthy
TapInspect

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