What are some essential programs and APIs in ConputerCraft?

Hello,
I am writing a package manager for ComputerCraft (I know, another one) and I need to fill my default repository with programs. I would like to know from the community: Which programs are essential programs or APIs that should be default in a package manager? It can be any program or API that can be installed on a computer, though I would prefer if it was on Pastebin already. Hoping to see many programs and APIs that I can fill my repository!
Jack

I don't see very many programs which are 'required' - mostly I prefer to use the built-in programs, occasionally grabbing an API like blittle or stitch.

You can put my programs in your repository. They are almost all licensed under BSD 2-Clause. You can find my packman repository here. You can rewrite the data for your own repository.

btw:
If you need a GUI, it is easy to rewrite Mynaptic for your own package manager, if you had a API. Just contact me.

Not to toot my own horn, but HONK

-but my own program STD-GUI is pretty essential…if I don't say so meself…