CSViewer
CSViewer is a fast and free Windows desktop application for viewing and analyzing large delimited text and binary data files, such as CSV, TSV, Parquet, and QVD. It can load millions of rows in seconds and offers advanced filtering, instant profiling with aggregates, null counts, and outlier detection. Users can export filtered data, save analysis views, and visualize data through charts and cross-tables. CSViewer is designed for easy exploratory analysis without sending data to the cloud. Aggregates and charts are updated immediately when a filter is applied or changed. Null counts, uniques, min/max values, aggregates, etc. for every column. Export the filtered subset of rows into another file for sharing or use in another application. Convert data from one file format to another, e.g. from CSV to QVD. When you export into the native for CSViewer .dset file format, data is saved together with filters and charts for your convenience.
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SmoothCSV
SmoothCSV is a desktop CSV editor for Windows, macOS, and Linux. It opens files in a spreadsheet-style grid for editing rows, columns, and multiple cells, with search and replace, filtering, sorting, and tools for comparing files. Users can detect or configure delimiters, quoting, text encoding, and line endings to control how CSV data is read and saved. A built-in SQL console runs SELECT queries on CSV files; selection statistics, aggregation, and text transforms support data review and cleanup. SmoothCSV also imports and exports Excel workbooks, exports PDF, and offers command-line workflows. It is designed for developers, analysts, and other people who regularly inspect or edit tabular files. All features are available without a purchase, while optional one-time individual and team licenses support development and suppress reminder notifications.
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Rons Data Edit
Rons Data Edit is a professional CSV / tabular text Editor for Windows.
The CSV Editor provides a wealth of tools and features designed to flexibly manipulate data. Ideal to remove duplicates and split or merge columns or rows. The interface is modern, clean, and user-friendly and the power and speed of the application allow the handling of large files with ease.
Unlike Excel, the Editor knows that the data is text and does not try to 'adjust' it and introduce workflow interruption with confusing errors. A perfect alternative to Excel for handling CSV data files.
If additional power is needed, Rons Data Edit can run Rons Data Stream 'Cleaners' to run lists of operations in multiple data files. For more information, a complete list of features, a lite free version and a Pro Trial, are available on the Rons Place Software website.
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Tad
Tad is a free (MIT Licensed) desktop application for viewing and analyzing tabular data. It is a fast viewer for CSV and Parquet files and SQLite and DuckDb databases that support large files. It's a Pivot Table for analyzing and exploring data. Internally, Tad uses DuckDb for fast, accurate processing. Designed to fit into the workflow of data engineers and data scientists. Tad includes updates to DuckDb 1.0, the ability to export filtered tables as Parquet (as well as CSV), a fix for formatting numbers in scientific notation, and other minor bug fixes and dependent package upgrades. A packaged installer for Tad is available for macOS (x86 and Apple Silicon), Linux, and Windows.
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