sc-im is a terminal spreadsheet calculator that brings vim-style editing to data manipulation. Built on ncurses, it delivers a lightweight alternative to graphical spreadsheet applications while maintaining powerful functionality.

Key capabilities include vim movement commands for intuitive navigation, UNDO/REDO functionality, and support for 65,536 rows and 702 columns (expandable to over 1 million rows). The tool handles multiple file formats: CSV, TAB-delimited, XLSX, and ODS for import, with export options including Markdown.

Advanced features make it suitable for complex workflows:

Lua scripting with triggers and dynamic modules for automation
GNUPlot integration for data visualization
Cell formatting including bold, italic, underline, and custom RGB colors
Wide character support for English, Spanish, French, Italian, German, Portuguese, Russian, Ukrainian, Greek, Turkish, Czech, Japanese, and Chinese
Data operations like sorting, filtering, subtotals, and cell shifting
Clipboard support for seamless copy-paste workflows
External function implementation in any language
Autobackup to prevent data loss

The interface uses standard vim keybindings (hjkl navigation, yy copy, p paste, u undo) making it immediately familiar to vim users. Configuration through the scimrc file allows customization of behavior and appearance. Available on macOS via Homebrew and installable on Linux and other Unix-like systems.

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