permutations
A software that generates and displays all possible permutations of the provided strings through command-line is available.
Cameron Hayne
report_bad_macros
report_bad_macros is a free command-line tool for checking C pre-processor macros. It identifies macros with improperly parenthesized definitions, ensuring correct code syntax. It reports only the macro body is wrapped within parentheses, currently offering this limited scope of validation.
test_stderr
Test_stderr is a script that demonstrates sending text outputs to STDERR and STDOUT. It is user-friendly, free, and can be used on the command-line. Additionally, it is useful for testing output redirections in shell scripts.
announceMail
Mail.app can announce the subject and sender of new emails via text-to-speech voice by integrating an AppleScript in the software's preferences. The announcement follows the selected voice in the OS X Speech settings.
TestLines
TestLines is a free, open-source software designed to test the speed of line-drawing.
ImageCalc
ImageCalc is an application that shows an image that is constantly updated for live tracking.
letters
Letters is a user-friendly Perl script that arranges and displays the letters belonging to command-line argument strings alphabetically. This tool is free-of-cost and easily accessible.
commonStart
CommonStart is a Perl script that enables users to identify the common starting string in the command-line arguments. It's free and operates via the command-line interface.