SynthoDesk · Built into Microsoft 365
Retire the macro-riddled template. Engineer the document instead.
SynthoDesk is a Microsoft 365 add-in suite for engineering teams. It replaces the tangle of VBA macros, orphaned templates, and “final_v3_REAL” files with governed, versioned documents — built right inside the Word, Excel, PowerPoint, and Outlook your team already uses. It requires a Microsoft 365 subscription: SynthoDesk installs as an add-in, not as separate software.
One suite, four apps
Document control, a cited calculation library, guided decks, and controlled transmittals — across Word, Excel, PowerPoint, and Outlook.
See pricing →One suite. Four disciplines.
Engineering discipline, added to the apps you already use
SynthoDesk adds a purpose-built engineering workflow to each core Microsoft 365 app — nothing to install beyond the add-in, nothing new for your team to learn. A shared command palette, unified settings, and a single silent Microsoft sign-in tie the four apps together.
SynthoDesk runs on top of Microsoft 365 and requires a Microsoft 365 subscription that includes Word, Excel, PowerPoint and Outlook — desktop or web. It signs in with the Microsoft account your team already has, and your documents stay in your own tenant.
Word — Document Manager
Turn documents into governed, standards-compliant records: retroactive conversion, dual style engines with legal numbering, draft/issued enforcement, automatic TOC, and auto-filling revision tables — with A4/Letter layout switching.
Excel — Engineering Library
200+ searchable calculators and lookup tables, cited to their source standards, with automatic safety notices and live, auditable cell insertion — real formulas in the worksheet, not screenshots.
PowerPoint — Presentation Builder
Guided deck assembly with customizable sections, automatic tenant branding, and figures pulled directly from the rest of the suite — presentation-ready in minutes.
Outlook — Communication & Distribution
One-click transmittals with the correct revision attached and distribution logged — so only Issued copies ever leave the building.
See it work
A closer look inside Microsoft 365
Here’s what SynthoDesk actually does inside Word, Excel, PowerPoint, and Outlook.
Draft → controlled, published document package — stamped, versioned, compliance-checked.
Blank sheet → cited calculation report — real formulas, inserted straight into the worksheet.
Structured inputs → a fully branded, presentation-ready deck — in minutes.
Published document → a formatted transmittal, right revision attached, assembled automatically.
The document, engineered