An independent studio for Power BI tooling and data‑driven research.
Run by Igor Cotruta from London, UK. We build small, focused tools for developers, data engineers, and IP professionals — and publish what we learn along the way.
powerquery.io. An always‑current reference for the Power Query M language — auto‑generated from Power BI Desktop’s #shared structure, with search, dark mode, and multi‑language support.
powerquery.io/driverless. Binary file format readers written in pure M — SQLite, Access, dBASE, .xls/.xlsb, SPSS, Stata, Avro and more, decoded byte‑by‑byte with no drivers or installs. Works in Power BI Desktop, Excel (including Excel for Mac), dataflows, and the Service.
PBIXRay. An open‑source Python library for inspecting .pbix files — tables, columns, DAX, M queries, relationships, and RLS — without Power BI Desktop.
Mac App Store. The native macOS app — a fast, offline .pbix inspector with a document‑based interface for browsing model metadata, DAX, and M code.
pbix.info. A browser‑based Power BI file inspector. Drop a .pbix in and explore its internals — no install, no upload.
SQL Cell. A Google Sheets add‑on that brings a real SQL engine to the spreadsheet — around 35 file formats, from CSV and Parquet to Excel, GeoJSON and Power BI models, read from your machine, any HTTPS URL or S3‑compatible storage. Backendless by design: DuckDB runs in the sidebar, so files are read where they sit and nothing — no spreadsheet contents, no analytics — is ever transmitted anywhere.
Trademark.fyi. Market intelligence on Madrid System trademark refusals — turning the daily WIPO Gazette into actionable insights on active offices, firms, and representatives.
Powernote. A Cloudflare Worker reverse proxy for Power BI’s publish‑to‑web reports — serves them under your own custom domain and strips the default bottom bar.