Dalus + Word
Specifications, ICDs and customer deliverables as real .docx files, grouped by subsystem and matched to your house template. The document stops being something you maintain by hand.
4 workflows
Requirement specification document
Turn your requirements into a Word spec, grouped by subsystem, with a traceability appendix.
Interface Requirements Document (IRD)
The obligations on an interface, stated per end, including the interfaces that have none.
Interface Control Document (ICD)
The agreed interface design, with a coverage table saying which sections the model could not fill.
Compare your model against a counterparty ICD
Characteristic by characteristic against their document, with how each match was made.