Note that this application is not supported anymore. It was done in my free unpaid time as open-source and free viewer. And due to people not understanding how open-source works, not even bothering to raise an issue with description of the problem (and I'm not talking about contributing) and just leaving negative review, I have zero interest in working on it. A simple native UWP viewer for Apache Parquet files (.parquet) based on the great .NET open-source library https://github.com/elastacloud/parquet-dotnet. Supports most .parquet file formats. You can open a file by selecting from file picker, dragging on the app or double-clicking a .parquet file on disk. This utility is free forever and needs you feedback to continue improving. By the way putting a 1 star review for no reason doesn't help open-source projects doing this work absolutely for free!