htop is a free and open-source interactive system monitor for Linux and other Unix-like operating systems.

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bat is a command-line tool that is used to view and display the contents of text files.

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tabview is a curses command line CSV and tabular data viewer. The loaded CSV can be viewed interactively. Data in columns can be sorted in various ways, searched, zoomed and copied in the clipboard.

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VisiData is a free, open-source tool that lets you quickly open, explore, summarize, and analyze datasets in your computer's terminal.

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