Pubrella is a workflow engine for regulatory writers and medical writers who produce source-heavy deliverables where every claim must survive expert scrutiny. Most tools handle research or drafting — not the handoff between them. That's where citation integrity collapses and rework begins. Upload your sources. Pubrella structures research, drafting, and verification into one connected pipeline — every claim linked to a specific source, every gap flagged before your client or regulator sees it.