CLIs are great because they make “using the computer” and “programming the computer” effectively the same activity in a lot of cases. Popular GUIs have made those two things completely separate modes

Each interaction with a CLI results in a valid program that can be saved, studied, shared, and remixed. Not so for a GUI, you don’t get the sequence of inputs and controls that solved the problem along with the solution. Usually you have to share the steps to the solution in a lower fidelity way, like a written list of instructions or a video recording, and then the other person gets to try to reproduce them on their own.

fabric is an open-source framework for augmenting humans using AI. It provides a modular framework for solving specific problems using a crowdsourced set of AI prompts that can be used anywhere. - danielmiessler/fabric

jless is a command-line JSON viewer designed for reading, exploring, and searching through JSON data.

TerminalTextEffects (TTE) is a terminal visual effects engine. TTE can be installed as a system application to produce effects in your terminal, or as a Python library to enable effects within your Python scripts/applications.

Sync, search and backup shell history with Atuin

Easily document cables and wiring harnesses.

And here are the upstream agit docs:

Stream free text-based movies in your terminal.

Stream free text-based movies in your terminal.