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.
Learn more
Caxton
Caxton is a native macOS large file text editor and CSV editor in one: a workbench for logs, CSVs, TSVs, JSON, SQL dumps, and exports of any size. One app instead of a text editor, a spreadsheet, and a log viewer: open the file and work. Every delimited file opens as text and as a typed grid; edits in either view show in the other, and saving writes the same file back. Nothing is imported.
It memory maps the file instead of loading it into RAM. A 50 GB log (403 million lines) opens immediately with memory under 160 MB. A 10 million row CSV opens as a sortable grid in 4.4 s, past Excel's row limit. Methodology at caxton.app/docs/benchmarks.
Find and replace with exact counts, filters that keep line numbers, a log viewer mode with severity filters, file compare, 18 encodings, typed sorting, fill series, remove duplicates.
Built for data engineers, SREs, DBAs, and analysts. After the 7-day trial, opening, searching, and filtering stay free; a license adds editing and saving.
Learn more
SheetLore
Sheetlore's CSV viewer and editor is a user-friendly, free online tool designed to simplify the management of CSV files. It allows users to effortlessly upload, edit, and download CSV files, loading quickly even for large datasets. It displays CSV files in a clean, paginated, and responsive table that supports horizontal scrolling, making it easy to analyze extensive columns. Features like global search filters, column sorting, and straightforward in-cell editing enhance data manipulation. Additionally, Sheetlore is mobile-friendly, ensuring seamless use across various devices.
Learn more
Edit CSV
Edit CSV is a free online tool that allows users to edit CSV files through a table-based user interface. It offers features such as undo/redo functionality, column sorting by clicking on header text, and the ability to rearrange rows and columns by dragging. Users can resize rows and columns, and navigate efficiently using keyboard shortcuts to move to the first cell in a row, to move to the last cell, to jump to the first cell in a column, and to reach the last cell. You can also add a line break within a cell. To delete a row or column, hover over it and click the trash icon. Double-clicking a column's resize handle adjusts its width to fit the content; double-clicking an auto-sized column sets its width to 200px, which is useful for very wide columns. It also provides a context menu accessible via right-click and supports copy-pasting using the tab key as a separator, similar to Excel.
Learn more
