A good starting point

A command-line client for SQLite databases that has auto-completion and syntax highlighting.

Record your terminal and generate animated gif images or share a web player

Summary:

• Use Boyer-Moore (and unroll its inner loop a few times).

• Roll your own unbuffered input using raw system calls. Avoid copying
  the input bytes before searching them. (Do, however, use buffered
  output. The normal grep scenario is that the amount of output is
  small compared to the amount of input, so the overhead of output
  buffer copying is small, while savings due to avoiding many small
  unbuffered writes can be large.)

• Don't look for newlines in the input until after you've found a match.

• Try to set things up (page-aligned buffers, page-sized read chunks,
  optionally use mmap) so the kernel can ALSO avoid copying the bytes.

The key to making programs fast is to make them do practically nothing. ;-)

Returns the ping, dns, SystemDNS, TLS certificate validity and HTTPS connection of the given URL.

Improve the quality of a picture using GAN. There are models for specialized pictures such as anime.

This project has a great roadmap with models for human faces and texts. More options: scaling et controllable restoration strength are on it too.

touch {hero,lightbox,form,another-component}.njk

Same as remove.bg (removing a background of an image), but in the CLI:

pip install rembg
curl -s http://input.png | rembg > output.png # from an external source
rembg -o path/to/output.png path/to/input.png # from a file
rembg -p path/to/input path/to/output # convert an entire directory

Easy to use cli text editor.
Aims to be more powerful than nano but easier to use than vim.