A Power BI-compatible open semantic engine.
Author reports, build mockups, and run DAX — without Power BI Desktop.
Dummy BI Engine compiles DAX measures into DuckDB SQL and executes them through a full semantic runtime — measures, relationships, RLS, calculation groups, and 33+ visual types included. It reads and writes Power BI project formats, so you can prototype with real data models, export back to Power BI, and share self-hosted reports without touching VertiPaq or a Power BI license.
Power BI compatibility is a design goal, not a guarantee. Engine is DAX-inspired and not affiliated with Microsoft.
DAX-native semantic engine — measures, relationships, RLS, calculation groups, field parameters
Two-way Power BI bridge — import PBIR & TMDL project files, export back
33+ visual types, crossfiltering, slicers — author BI mockups without Power BI Desktop