Check a schedule on a machine you don't control
Browser-based tools and a written reference for construction planners. Nothing installs. Nothing uploads. No macros to unblock, no Office bit-version to match, no admin rights required.
Most P6 toolkits are Excel add-ins or Windows executables, and on a laptop your employer controls that is usually where it ends. A handful of free browser viewers will open an .xer and draw a Gantt. None of them will run the fourteen DCMA checks, audit three files against each other, or tell you what the result means. Gridopedia does both: the check, and the page explaining the check.
107 reference pages
Float, logic, calendars, updating, earned value, reporting, delay and claims. Every page cites the standard it relies on, and says so when something is uncertain. Free to read, no paywall, no account.
Nine schedule tools
DCMA health check, baseline submission check, three-file progress audit, XER to Excel, S-curves, WBS tables, longest path, out-of-sequence, logic integrity. In final testing.
Productivity rates
Published rates and planner-contributed field rates, side by side, every source named. We never blend them into one number — a blended figure is one nobody can defend.
Written by one planner, checked against the standards
PMI, AACE, DCMA, SCL, FIDIC and NEC, cited page by page, so you can check the source rather than trust the author.
Be told when the tools go live
One email when the first tool is published. Downloadable offline copies go to this list first.
What this does not do
So nobody wastes an afternoon finding out
Gridopedia reads, checks and reports. It does not write back to P6, repair databases, split activities or export XER files. If you need those, buy a proper desktop tool — they are good, and they are cheap.
Nothing here is legal or contractual advice. The rate tables are for sanity-checking a duration, not for evidence in a claim.