Exports Kubernetes events to Opsgenie, Slack, Elasticsearch and more, with routing and filtering. Built at Opsgenie, presented at KubeCon NA 2019, 1,000+ stars, runs in a lot of clusters I have never seen.

An iOS app for the places behind license plate codes — Türkiye, Germany, France, and the UK. Point the camera at a plate, learn the town. Built for my family; collects no data at all.

Course scheduler for Bilkent University. Started in 2010 so I could keep my Friday afternoons free; over 100k users in 15 years. Transferred to IEEE in 2016, rewritten once since.

A webcam that renders to a bare terminal. No reason it should exist; 300+ stars say otherwise.

A Go web framework with dependency injection and automatic request binding, from when writing your own web framework was a rite of passage. 500+ stars.

Docker-based programming assignment grading, built in 2013 on Docker 0.6. Graded 150 submissions an hour when the manual process took a month. The full story is a post of its own.