Schedule Viewer (XER) — inspect the logic your dates stand on.
A Primavera P6 schedule can look finished and still be hollow — open-ended activities, pinned dates, float nobody believes. The full viewer reads a raw .xer in the browser; this free edition is its Excel companion, scoring your programme’s health across the same six categories.
What it does.
The Schedule Viewer is built around one question: can these dates carry weight? The full product parses a Primavera P6 export (.xer) directly — activities, WBS, relationships, resources — and presents it as an interactive Gantt with baseline bars, a dependency tree, four-week look-ahead briefs, S-curve analytics, and a health engine that scores the schedule out of 100.
The free edition distils that health engine into a workbook. You enter up to 25 activities and your relationship mix from P6; the dashboard scores six categories — logic completeness, float health, relationship quality, duration reasonability, constraint usage, and progress integrity — and gives each one a plain-English reading, not just a number.
Inside the free edition.
- Activity register for up to 25 activities — type, status, duration, % complete, total float, and predecessor/successor counts, with automatic checks per row.
- Logic mix sheet — enter your FS/SS/FF/SF counts and get the Finish-to-Start share, with every Start-to-Finish link flagged as a likely modelling error.
- Six-category health score out of 100, using the same weights and thresholds as the full viewer — negative float, excessive float over 80 days, durations over 44 working days, hard date constraints, progress mismatches.
- Live dashboard with data bars, RAG status, and an overall verdict on whether the schedule can support decisions.
- Works in Microsoft Excel, Google Sheets, and LibreOffice Calc.
Free edition vs full viewer.
| Free edition | With stomwerk projekt | |
|---|---|---|
| Input | Manual register, up to 25 activities | Raw .xer parsed automatically — every activity, relationship, and resource |
| Health analysis | Six categories scored from summary inputs | The same six categories scored finding-by-finding, every offending activity listed |
| Views | Static dashboard + RAG status | Interactive Gantt with baseline and links, dependency tree, look-ahead briefs, S-curve analytics |
| Relationship audit | Mix entered as four counts | Every SS, FF, SF, and lag inspected per activity |
| Price | Free | Engagement |
Questions, answered.
What is an XER file?
The native export format of Oracle Primavera P6, the scheduling tool used on most large capital projects. It is a plain-text file containing the full project database — activities, WBS structure, relationships, resources, constraints, and float. The full viewer parses a raw .xer directly in the browser; the free workbook runs the same health checks on values you enter from your P6 layout.
What does a schedule health check measure?
Whether the dates in a programme are the product of sound logic or wishful thinking. It scores six categories out of 100: logic completeness, float health, relationship quality, duration reasonability, constraint usage, and progress integrity — the places where a schedule quietly stops telling the truth.
Can the free edition open my .xer file directly?
No. Direct .xer parsing — with the Gantt, dependency tree, look-ahead briefs, and S-curve analytics — belongs to the full viewer, delivered as part of a stomwerk projekt engagement. The workbook applies the same scoring to a register you fill in from P6.
Does the workbook work in Google Sheets and LibreOffice?
Yes. It uses standard formulas, dropdown validation, and conditional formatting that behave identically in Excel, Google Sheets, and LibreOffice Calc.