Software

Below is a selection of free software I've developed, typically because it's useful or amusing to me.

Emojipasta Generator(link: kevingal.com) ^

Add word-relevant 🤖 emojis ✨ to text with sometimes hilarious results. Based on AnEmojipastaBot, which I unleashed on Reddit a few years ago.

Pixelate(link: kevingal.com) ^

Make images more pixely, make them black & white, resize them, or add a dithering effect. I used it for this blog post.

Tiny Metronome(link: kevingal.com) ^

A mobile-friendly, 981-byte metronome. I made it because most of the metronome web apps I found on the internet were bloated, or clunky on mobile. I also wrote about this app in a blog post.

Tiny Guitar Tuner(link: kevingal.com) ^

The sibling of Tiny Metronome. EADGBE tuning app for guitars, in 903 bytes.

bs(link: github.com) ^

A Python CLI tool that converts numbers between bases with as little typing as possible. If you don't specify the base, it does all valid conversions between common ones.

Installation:

pip3 install base-convert-cli

Examples (more in the README):

$ bs FFFE
[from hexadecimal]
  decimal     65534
  binary      1111111111111110
  octal       177776
$ bs -t d F
15

pseu(link: github.com) ^

A Python CLI tool that randomly generates numbers, shuffles, picks, and rolls dice. Possible uses: picking someone to do a shitty job; relieving yourself of the agony of deciding which movie to watch; making life choices.

Installation:

pip3 install pseu-cli

Examples (more in the README):

$ pseu pick "good life choice" "bad life choice"
bad life choice
$ pseu pick --n 2 </tmp/movies.txt
Boogie Nights
The Hunt for the Wilderpeople
$ pseu roll 1d6
3
$ pseu rand 100
42
$ pseu shuffle alice sue bob
bob
sue
alice

TokiPonaPoemBot(link: twitter.com) ^

I wrote about a poem generator that I made for the toki pona language, then turned it into a Twitter bot. It tweets poems like this on a daily basis:

soweli wawa,
pi tomo suli ala,
e ni li tawa.

a a mi kala.

MonaLisaGoL(link: github.com) ^

Common Lisp code that searches for Game of Life states that turn into a given picture. It can also be used to create GIFs of the Game of Life. Write-up here.

Goes well with Pixelate, because you can: (1) take your own picture, (2) shrink it and turn it black & white (using Pixelate), and then (3) pass it to MonaLisaGol to find a Life state that turns into your picture. Or just run your picture as a Life simulation, which is also cool.

Collision Calculator(link: kevingal.com) ^

If you put 'k' balls in 'N' buckets, what's the probability that at least 2 balls will end up in the same bucket? In other words, what's the probability of a hash collision?

ka(link: github.com) ^

ka is a small calculator language. It supports various useful features for day-to-day calculations, such as:

• Common math functions and constants.
• Fractions.
• Units and unit conversion.
• Variable assignment.

There are 3 ways to interact with it: executing individual expressions through the CLI (ka '1+1'), a CLI interpreter (ka), and a GUI (ka --gui).

>>> 2 * (1/2)
1
>>> 1 metre + 1 foot > feet
4.2808398950131235
>>> p = 0.7; C(10,3) * p^3 * (1-p)^7
0.009001692000000007
>>> sin(90 deg)
1 
>>> e^pi
23.140692632779263

Installation:

pip3 install ka-cli

Slingshot Chess(link: kevingal.com) ^

A version of chess where you fire your pieces at the enemy and try to knock their king off the edge of the board.

sketches(link: github.com) ^

Experiments in generative art using Common Lisp and the Sketch graphics playground. I'm also involved in the development of Sketch itself.

noisy(link: github.com) ^

Perlin noise library for Common Lisp. Supports an arbitrary number of dimensions.

Here it is in 2 dimensions:

Usage:

CL-USER> (ql:quickload 'noisy)
CL-USER> (use-package 'noisy)
CL-USER> (noise-seed 7)
CL-USER> (noise-detail :lod 2 :falloff 0.4)
CL-USER> (noise 0.02 0.3)
0.39439920179571514d0
CL-USER> (defparameter *N* (make-noise 2 :seed 7 :lod 1 :falloff 1.0))
CL-USER> (set-noise-detail *N* :lod 2 :falloff 0.3)
CL-USER> (noise-gen *N* 0.04 0.09)
0.17510623096285327d0

cl-bittorrent(link: github.com) ^

A barely-functioning BitTorrent client, written in Common Lisp. Will require a non-insignificant amount of TLC to be useful for practical purposes.

cloroforth(link: github.com) ^

🚧 🚧 🚧

A work-in-progress Forth interpreter.