I'm Mikołaj Kuranowski, currently doing a Comp Sci student at (both) Warsaw University of Technology and Kyungpook National University. I do a lot of work realted to open transportation data.

Here are some fancy stats:

• TokyoGTFS
• HokkaidoRailGTFS
• WarsawGTFS
• PolRegioGTFS
• PKPIntercityGTFS
• TristarGTFS (Gdańsk/Gdynia/Sopot)
• RzeszowGTFS
• RadomGTFS
• PLRailMap - map of all rail stations used by Polish operators
• jvig - GTFS viewer

• aiocsv
• osmiter
• pyroutelib3
• table2md

• asmjson - JSON parser written in assembly (x86-64 nasm)
• Advent of Code 2019 - in Go
• Advent of Code 2020 - in Clojure & Python
• Advent of Code 2021 - in Python
• Advent of Code 2022 - in TypeScript
• Advent of Code 2023 - in Rust
• Project Euler