Hello.
I'm @akx (twitter, reddit, keybase), a programmer generalist and general enthusiast from Finland.
I'm a founder/CTO/lead dev/sysadmin/startup tech hand at Valohai, the finest purveyor of professional MLOps tools in the world.
I'm one of the maintainers of Babel, an internationalization library for Python.
My stuff
Here's a list of some of the open-source stuff I've done.
It most likely is not complete nor up-to-date. You can always check the repos page for more, and there's probably something interesting on CodeSandbox too.
Where things are tagged as "Release", it means the stuff has been successfully used in production, or that I personally use that stuff at least semi-regularly. For stuff in other states of release, well – your mileage may vary.
Audio
Release
oneten
2020 · 06
Play music like it's meant to be played, at 110 BPM.
uberfader
2020 · 06
Concatenate and crossfade audio to form a very long sequence.
ikuinen-webbikoodaus
2020 · 01
Podcast-generaattori.
afsp-mirror
2018 · 06Mirror of AFsp (Audio File Programs and Routines)
pls
2017 · 12Sort, filter and export Spotify playlists
Convolutions
2017 · 09Convolution samples - Reverbs and delays and effects for days!
veryloudsite
2016 · 11#radix_challenge hack for Junction 2016
chromon
2015 · 10Stochastic scale-based sequencing with a sampler
reascale-js
2015 · 10Reads Reascale files, outputs JavaScript. Built as a dependency of Chromon.
cosmicdrone
2015 · 10Subtly oscillating drone machine.
geoseq
2015 · 09Geometry-based web audio sequencer
maskin
2015 · 07A cross-modulating synth sequencer toy.
tune2youtube
Converts music to video with cover art, ready to upload to YouTube.
EFFTHATNOISE
2014 · 09A bytebeat livecoding environment.
Notifications
Some libre notification sounds.
fxfxfx
2010 · 10
Old-skool noise/sound effect generator for Windows
chopshop
2010 · 04Chops WAV files into slices of equal count or duration
Beta
multi-room-stream
2020 · 06LiquidSoap script for a multi-room streaming system
melu
2017 · 12A meta FM synth.
fatto-biito
2017 · 11MAKE FATTO BIITOS. Sampler emulator on the web!
suppisyn
2017 · 05Stochastic sampling synthesizer from a friend's voice
arpy
2014 · 05A Web MIDI arpeggiator/step sequencer thing.
python-portmidi
2013 · 05Ctypes PortMidi wrapper for Python
noisykeys
2013 · 03A little C# app that mutes microphones when noisy keyboards are abound.
Alpha
overwasdf
2017 · 12Overwatch voice line regeneration using LSTM
stk-js
2014 · 07Hand-transforming the Synthesis ToolKit to JavaScript.
spotify-tools
2014 · 01Tools to convert and mangle Spotify/Last.fm/Youtube music playlists
Sketch
hetkinen
2023 · 08A sampler.
handi
2023 · 05Turns your hands into a MIDI controller.
frittikeitin
2022 · 05🎶 ➡️ 🥘 ➡️ 🗑
simaa
2022 · 04A sima soundboard.
tlfe-soundthing
2021 · 11Synthesizer toy for Turku <3 Frontend
Cryptocurrencies
Release
walletool
2017 · 08A tool for reading wallet.dat files
Alpha
coinbot
2017 · 11Who knows what this thing does...
nochain
2017 · 08Super duper simple, naive blockchain proof of concept in Node
Deprecated
goligoi
2017 · 12Niimbal grybdogoligoi! Keep track of your crypto holdings, with automatic value and position determination
Data
Beta
nutritious
2016 · 01Normalized nutrition data
bk-suomi-menu
2014 · 10A menu for a fast food chain that only serves their menus as images.
Data Science
Release
havaintopallo
2019 · 11Download & convert Finnish Meteorological Institute observation data
juomamaailma-scrape
2019 · 09Scrape machine-readable data from Hartwall's Juomamaailma.fi
asdfsanat
2018 · 11find paths and chains of finnish words, e.g. pala - ala - sala
new-noises
2018 · 08A char-rnn to generate new nonsensical genre names based on everynoise data
follaritrack
2018 · 06Time-series of Fölläris
yle-kuntavaalit-2017-data
2017 · 04Data about the 2017 Finnish municipal elections, scraped from yle.fi
Beta
kuntaliitto-scrape
2020 · 09Scrapes data from Kuntaliitto's site.
Sketch
hindex
2021 · 02HTML indexer experiment
slack-extrapolate
2021 · 02Extrapolate Slack member counts based on member activity data
suomen-pizzeriat-ja-kebulat
2018 · 08Who knows what this thing does...
pizzeriat
2016 · 08Data about Finnish pizzerias
Development
Release
fixit-rewrite-asserts
2021 · 01Fixit rule to rewrite assertions into if not X: raise AssertionError("X")
flat-ui-colors-json
2020 · 12The colors from flatuicolors.com as JSON
moo
2020 · 09A Befunge-like esolang from 2005, implemented in Basic
juupeli
2020 · 05Encodes arbitrary Python data structures into XML in a reasonably sane way.
appify
2020 · 02Easily wrap a regular binary into a macOS .app bundle.
source-from-sourcemaps
2019 · 12Extract original source from JavaScript sourcemaps.
react-wheely
2019 · 11A mouse/touch-driven wheel component for React.js.
tm35fin
2019 · 01JavaScript tools for converting to/from Finnish maps
autotypes
2018 · 08Finds non-stub TypeScript @types/ packages for your package.json.
nicen
2018 · 07Nicen makes your code look nicer! (An omniglot pretty-printer.)
npm-dep
2018 · 07Generate dependency graphs of NPM packages
repose
2018 · 07Visualize the evolution of a Git repository's languages and size
dotnet-cfg-example
2018 · 06.NET parser for an example context-free grammar syntax
data-uri
2018 · 06data: URI encode/decode tool.
webpack-xray
2018 · 04A modern webpack bundle analyzer
ec2ssh
2017 · 12Easier SSH into EC2 instances
ghpg
2017 · 08Easily publish a directory to gh-pages
gentry
2017 · 07A simple reimplementation of Sentry for low-traffic sites
micro-style-loader
2017 · 07Teensy tiny nearly-zero-runtime Webpack loader for styles
cookiecutter-js-sketch
2017 · 06Cookiecutter template for live-reloading JS sketches
lepo
2017 · 05Contract-first REST APIs in Django
django-soft-choice-fields
2016 · 09Choice fields that don't record the actual choices lists in migrations.
django-i18nkit
2016 · 08Making Django internationalization a little easier
foofdf
2016 · 06Simple tool to fill PDF forms based on FDF/XFDF/JSON
mklocale
2016 · 02A small utility to download and combine translations
pytest-repeat
2015 · 12Repeat py.tests.
Beta
travis-to-github-actions
2020 · 12Convert Travis.yml to GitHub Actions workflows.
elbowgrease
2020 · 12Filter and reformat Amazon AWS ELB log files
use-pagination
2020 · 06Super simple TypeScript native pagination hook for React.
docker-show-context-rust
2020 · 04Show a Docker build context
pyml
2019 · 12Non-serious Python as YAML proof of concept
css-i18n
2018 · 05Mappings of CSS properties, keywords and colors to various languages! It's silly!
django-lint
2017 · 09Statically analyze Django projects for common problems.
docker-chrome-dev
2017 · 04Headless Google Chrome! In a container! On a whale!
espy
2016 · 09Elasticsearch introspection utility
docker-mapnik
2016 · 08Mapnik Docker container with Node and Python bindings
touchy
2016 · 04Node.js server to translate OSX touchpad data to web sockets
abyss
2015 · 12A statistical profiler and flamechart generator for Python
Alpha
pipimi
2020 · 09Proof of concept super-fast Python dependency locker
emojiscript
2020 · 01A programming language in all emojis
python-minift
2012 · 04A small wrapper for parts of FreeType for Python.
csharp-jsonparser
2012 · 04A greenfield JSON parser for C#
Sketch
tokei-tar
2024 · 04Small wrapper around tokei to allow reading directly from a TAR archive
preco
2024 · 02A partial reimplementation of pre-commit in Rust
pip-local-cache-index
2023 · 10Install wheels from your local pip HTTP cache
pylint-to-ruff
2023 · 09introspect your Pylint configuration and figure out what Ruff rules to enable or disable
satamanosturi
2023 · 06Moves Docker images
ruff-report
2023 · 06Slice and dice your Ruff reports
ruff-usage-aggregate
2023 · 03ruff-usage-aggregate
gha-tools
2023 · 02Tools for working with GitHub Actions
pyproject-migrator
2023 · 01Convert setup.cfg, etc. to pyproject.toml files
react-curved-input
2022 · 07A small React component to turn any SVG path into a slider.
smontry
2022 · 03A very minimal single-file Python client for Sentry.
notorious
2022 · 03Apple Notes database parser
ts-state-refactor
2022 · 02Tool for refactoring state in TypeScript
pino
2022 · 02Stack files into a container image
aegg
2022 · 02An äggregator
perfkit
2022 · 01Bits and pieces for non-production performance observation, logging and optimization.
kekkonen
2021 · 12Minimal type-safe globalesque state for React
setuppy2cfg
2021 · 12setup.py to setup.cfg converter
gihuha
2021 · 10Tools to play with GitHub organizations, projects, and issues.
pkgdiff
2021 · 09Generate a succinct diff between two archive files.
pypipo
2021 · 07simple PyPI pull-through proxy
vite-react-ts-template
2021 · 06My React + TypeScript template for Vite
mappi
2021 · 06A mapping function finder
docker-interactive-rmi
2021 · 04Interactive rmi for docker
pyfastxml
2021 · 01Experiments with fast low-memory XML parsing in Python
toyvm
Toy VM and assembler (2008)
Embedded
Beta
m5-experiments
2019 · 09Who knows what this thing does...
Finance
Beta
nordnet-stream
2020 · 03Stream data from Nordnet's semipublic API
Games
Release
dontletgo
2018 · 07
A silly Flash game I made in 2004.
transgress
2018 · 04Find out which line strings are close to a number of points
words
2016 · 11A word finder.
evotd
EvoTD, my contribution to Ludum Dare 24 (2012)
Beta
keyble
2018 · 09(lausutaan kiipeli) An OCR hack.
browserdungeons
A game I made inspired by Desktop Dungeons back in 2010. Ported from a private Hg repository, so the quality's not the best.
Sketch
sanamanuli
2022 · 01Sanamanuli on pieni kissaeläin joka auttaa sinua pelaamaan Sanulia.
vastasanuli
2022 · 01Vastasanuli pelaa Sanuli-peliä.
Graphics
Release
gradient
2021 · 02Gradient designer with code generation.
gloop
2021 · 01Automatic as-perfect-as-possible GIF loop maker
composure
2020 · 06Composite *.tif image sequences from several directories into a single PNG image sequence.
gifminterp
2019 · 12Automatically generates high-quality motion-interpolated 120 FPS loops from low-FPS GIFs
papyrus-terrible
2019 · 10A bookmarklet to set any site in a terrible version of Papyrus
svgpathology
2018 · 03Real-time editor for SVG paths
throwmoredots
2018 · 02Generate "raster dot" SVGs from images
bdf-js
2017 · 12Render BDF pixel fonts in JavaScript
ellip
2017 · 07Points along an ellipse, deflected like particles
watercolour
2017 · 06Watercolour generator
gifify
2017 · 03A tiny Python script for making high-quality GIFs out of videos.
circgen
2015 · 10"Circuit" image generator I once wrote for a friend.
ltag
2015 · 07Laser graffiti (L.A.S.E.R. Tag) software.
Built out of frustration with the architecture and performance of the GRL's software.
Includes support for single-touch TUIO input in addition to built-in OpenCV blob tracking.
glitch2
2014 · 12HTML5 Canvas glitch effect generator
tritri
2014 · 07Kinetic triangles in SVG
mashed
Full screen JPEG glitch
islands
JavaScript island map generator (circa 2013)
spacefill
An organic-looking space-filling algorithm
glmr
2011 · 11Canvas trails/drawing hack.
qta
2009 · 12Pretty particle chamber simulation (Windows)
pyalleg
Python2/Allegro bindings (circa 2005, unmaintained)
Beta
coil
2018 · 04Procedural SVG generator
fraktur
2017 · 08Break polygons
my-video
2016 · 10Dynamic kinetic typography video for Childish Gambino's Put It In My Video
GRL-LaserTag
2015 · 07Graffiti Research Labs' LASER Tag, with updates
ix
2014 · 06Stack-based image processing toy language
kohina
An old C#/.NET/WinForms node-based graphics processor.
Alpha
prim2
2017 · 11Pseudo-genetic algorithm to recreate images using blurry SVGs
Sketch
polykone
2024 · 03Define polygons (like imagemaps of yore) on an image
res-helper
2023 · 12Resolution helper for e.g. Stable Diffusion
lcm_test
2023 · 10Quick and dirty Streamlit UI for Latent Consistency Models
holey
2023 · 10Generates speaker grille patterns.
glorb
2023 · 03Generates an STL mesh of the globe, with height data.
fadio
2022 · 12Generate a frame-blended animation from a set of images
cde-style
2021 · 09Retro.
minsky-explorer
2021 · 09A graphics hack based on the Minsky circle algorithm
wiz-colors
2021 · 08Named colors from the WiZ Connected Android app.
depix
2021 · 04Detects the scale factor of an upscaled pixel art image and scales it down for you
silcrowsnest
2020 · 08Find all the silcrows.
Home Automation
Release
energiaonline-scrape
2021 · 01Scrapes machine-readable energy consumption data from energiaonline.fi
hass-ruuvitag
2018 · 12Hass.io addon for Ruuvitag Weather Stations
ruuvidriver
2018 · 03Serves your Ruuvitag Weather Station data over HTTP.
Sketch
illuminatrix
2023 · 08Fancy light schemes for your home
aioruuvigateway
2022 · 12An asyncio-native library for requesting data from a Ruuvi Gateway.
sensirion-ble
2022 · 11Parser for Sensirion BLE devices.
Internet
Release
reddit-tv
2016 · 10Infinite distraction, powered by /r/youtubehaiku
IoT
Release
iotlog
2016 · 06Tiny HTTP IoT data logger
Alpha
homekit
2016 · 05Backend & frontend for a tablet-based home "automation" display
Libraries
Release
dot3k-c
2015 · 04A C library for Pimoroni's Display-O-Tron 3000
gravelly-js
2014 · 07Object-oriented API for generating SVG path strings
minigradient-js
2014 · 05Mini-library for gradient interpolation
Sketch
torchsde-brownian
2023 · 09Brownian motion generation code from torchsde version 0.2.5 as a standalone package
smolsaml
2022 · 12A very minimal SAML 2.0 SP implementation for modern Python versions.
synkka
2022 · 12Some asyncio helpers. Not as bleak as it sounds.
Incomplete
foamy
2012 · 09Simpler SOAP for Python.
Other stuff
Release
fi-geocode
2021 · 01A simple geocoder for Finnish addresses using public data
intense
2020 · 11Makes your face look more intense.
blahfeed
2020 · 10RSS/Atom/... feed combinator
jatkoyhdyssana
2020 · 09yhdyssanalogia-digitaalimuunnin
diced
2018 · 10A very small HTTP dice daemon
untappd-user-stats-tools
2018 · 05Utilities for Untappd Supporters to help them analyze their history
satufy-pdfs
2018 · 04Read PDFs out loud via macOS say
MacKeyLog
2017 · 10Minimal macOS keylogger
folichrome
2017 · 09Chrome extension for Turku public transit (Föli)
tinydynip
2017 · 03Yet another DynIP updater
summarize-sync-io
2017 · 02Summarize Node.js --trace-sync-io logs
sshw
2017 · 02Goodifying terminals for SSH!
uni
2016 · 10Unicode map on the command line!
xerador
2015 · 11A name generator
slack-topical
2015 · 08Topic-augmenting bot for Slack
slacktrack
2015 · 06Lazy Slack archiver
peep
What if you could only see just a little bit of the web?
A bookmarklet I made for a friend who was working with visually impaired people, with the idea that you could show how hard it is to navigate the Internet if you can only see a tiny bit of each page.
Beta
lauttanen
2020 · 04:ship: Finnish archipelago trip planner
prh-pokemon
2019 · 03Compare company names to Pokémon names.
ledbadger
2018 · 06Tools for interacting with XANES X1 programmable LED bicycle taillights
neat
2017 · 05beta.eat.fi data visualizer (proof of concept that it doesn't have to be slow)
rahe
2017 · 02Retrospective personal budgeting
runway
2016 · 10Declarative budgeting
concol
Console color experiment, 2015
Alpha
diskbunny
2016 · 04A :rabbit: for your :file_folder:
Sketch
nmap-xml-format
2020 · 10Formats Nmap XML output into human-readable (Markdown) form.
as3-line-of-sight
2020 · 10An old Flash tech demo.
Presentations
Release
webpack-remote-plugin-test
2017 · 10Proof of concept to show how webpack-bundled plugins can be linked dynamically together
demystifying-webpack
2017 · 04Demystifying Webpack – presentation & code
webpack-css-bundle-example
2017 · 04Webpack2 multiple entrypoint CSS extraction example for Koodiklinikka
Beta
so55822235
2019 · 04Python extension wrapping strpbrk() for ultimate performance
pyttipannu
2016 · 09Simple recipe aggregator project used for an internal training at Anders.
djembe
2014 · 01Django template toy environment (for learning!)
Reverse Engineering
Release
csdecode
2020 · 08Decodes some CSD files
demxf
2017 · 11Tools for manipulating Cycling'74 Max/MSP files
Beta
kartool
2017 · 12Tool for audio extraction from a car game with an Italian plumber
Tools
Release
svg-calendar-generator
2021 · 01Generates calendars as SVGs.
andrey
2020 · 08Markov chain text generator.
hmc
2020 · 06Hours/minutes converter
telegram-sticker-dl
2020 · 03Download sticker packs from Telegram
res-extract
2020 · 01Resource (icon) extraction tools
kcs-vote
2019 · 08D'Hondt tally for Desu/C 2017
google-authenticator-extract
2019 · 03Extract QR codes from a Google Authenticator database file
slack-emoji
2018 · 12slack emoji downloader
emoji-extract
2018 · 09Extract Apple Color emoji
slack-image-download
2018 · 08Download images from Slack workspaces. (DOWNLOAD ALL THE DOGGOS)
geojson-vis
2017 · 09Quickly visualize a GeoJSON file
merge-sms-backup
2017 · 07Tools to merge XML files generated by Carbonite SMS Backup and Restore into a deduplicated JSON file.
billtag
2017 · 06Hackery bill splitting
funfun
2017 · 04Easing function generator and visualizer
redwall
2016 · 05Download wallpapers from Reddit
mixdesk
2016 · 05Electron-based Mixcloud.com client
d2d
2016 · 04Data-to-Data transformer tool
ttf-embed
2016 · 02A fork of Tom7's ttf-embed
npdeck
2015 · 09Extract "Now playing" from Winamp/Foobar2000 into text files and/or images.
Built for OBS-Studio, but could be useful for other uses.
tcd
2015 · 07Tiny Colorful Dots - a simple, small, fast light color picker
license-grep
2015 · 06Figure out licenses for the current Python/NPM/Bower environment
smh
2015 · 04just a little file-watcher-child-process-reloader.
duplica
2014 · 08A fast file duplicate finder in C#
git-kit
2014 · 07Some extension commands for git
xalc3
A little desktop calculator (or Lua interpreter) for C#.
farr_tinyev
2009 · 06A bridge between Everything and Find and Run Robot.
Beta
fdf
2019 · 07Fast Duplicate Finder
mootate
2019 · 06Mutate text á la "All work and no play..."
tem
2018 · 09Realtime templating tool
s3-dupes
2017 · 06S3 duplicate object detector & deletor
rd
2017 · 04Reddit downloader/video link detector
caldera
2015 · 04Utilities for distilling data from the Unicode CLDR
unimap
2015 · 03An Unicode map in the browser!
bro-py
2014 · 01Unofficial Bropages.org Python client
Remote
2014 · 01Remote system session manager for Windows
requiem
2013 · 09Silliest Debian/Ubuntu provisioning toolkit
lauo
Incomplete yet functional fast file launcher (like Launchy) for Windows
lanline
2010 · 09Once upon a time I wrote a file sharing program for LAN networks during a LAN party. The timestamps reflect this.
Sketch
honkshoo
2023 · 07Honkshoo reads, converts and visualizes data from CPAP machines.
ggify
2023 · 05Tool to download models from Huggingface Hub and convert them to GGML for llama.cpp
solar
2023 · 04Solar time map
clinton
2023 · 04A bill processor
nurin
2023 · 02Taasko se netti on nurin?
svg-wave
2022 · 10Generates waves over SVG paths.
aws-inventor
2022 · 09Inventor-izes AWS resources for e.g. SOC2 compliance use.
wuffle
2022 · 09Aesthetic word shuffler/wrapper
lerppu
2022 · 07Tracks storage device prices in Finnish web stores.
playwright-snapper
2022 · 05Snapshot pages with Playwright
unifun
2022 · 01Fun with Unicode!
cachemoney
2021 · 08Extracts files from Chrome/Chromium/Electron cache.
fi-words
2021 · 06A list of Finnish words and names, automagically generated from online data.
nessu
2021 · 06A NES emulator that corrupts ROMs
Uncategorized
Sketch
openconnect-socks-proxy
2023 · 11Dockerfile + Python start script to configure an openconnect + tunsocks SOCKS proxy.
foruda
2021 · 09File manipulation DSL
python-codemods
2021 · 01Python codemods
Webdev
Release
django-managerie
2017 · 10Expose Django management commands in the admin
Beta
picotable
2015 · 02Tiny, fast data grid built on Mithril.js
stateside
2013 · 10Layer comps for HTML.