What is it?
ZDDC is a convention, not a platform. Every deliverable's filename encodes its tracking number, revision, status, and title; every transmittal folder is date-prefixed and self-describing. A plain folder on your computer or a shared drive becomes a fully searchable, auditable record — no server, no database, no software required to read it.
The three tools below are optional helpers around this structure. Each is a single HTML file that works entirely on your own machine: open it, pick a folder, and you're working. They run offline and never upload anything. You can start with Browse on your existing files right now — there's nothing to set up first.
The tools
Three single-file apps. Click one to open it now, or right-click → Save As to keep your own copy — each works offline forever, with no install and no updates.
- Open files on your computer and preview them instantly — PDFs, Word, Excel, images, markdown
- Move through your folders the way you already think about them
- Edit markdown in place and save it as Word, PDF, or HTML
- Works completely offline; your files stay on your machine
- Rename messy files into clean, consistent names
- Give each file a tracking number, revision, and status just by dropping it into place
- Group deliverables into dated transmittal folders, ready to send
- Edit like a spreadsheet; saves the organized copies back to your folder
- Search and filter by tracking number, status, discipline, or plain text
- See every revision of a deliverable and where it is in its lifecycle
- Group by transmittal to see what was sent, and when
- Download any selection as a ZIP — read-only, nothing gets changed
To open a folder straight from your computer, use a Chromium-based browser — Chrome, Edge, or Brave. That one feature isn't available in Firefox or Safari yet. Browse all versions →
Learn more
- Technical Reference — the full ZDDC convention: filename format, tracking numbers, revisions, status codes, folder naming, and transmittal workflow.
- All releases — every version of every tool.
- codeberg.org/VARASYS/ZDDC — source code and issue tracker.