# Blog

Occasional notes on infrastructure, Elixir, Linux / Open source / security, and startup life — since 2010.

Each post is also available as Markdown at the URL below.

- [Eight Arms, All Billable](https://t.kolsto.no/blog/clocktopus/index.md) (2026-10-04): Clocktopus is a local macOS time tracker that suggests work sessions and asks before recording them. No screenshots, no cloud. Suggest, never surveil.
- [The Ash AI Tax](https://t.kolsto.no/blog/ash-ai-tax/index.md) (2026-05-30): I kept noticing my AI agent burned more tokens on our Ash code than on plain Phoenix. So I measured it: ~2.6x more on Claude, ~1.9x on Codex — building the exact same feature.
- [Hello again, again!](https://t.kolsto.no/blog/hello-again-again/index.md) (2026-03-05): Third time I have lost the server this site runs on. This time an AI rebuilt it while I made demands about font sizes. New custom theme, same Hugo.
- [Hello again!](https://t.kolsto.no/blog/hello-again/index.md) (2023-11-03): Resurrected from backup after the server aged like a fine glass of milk. New Hugo theme, new web server, new CI pipeline, and some oldies of Bob.
- [In other news](https://t.kolsto.no/blog/in-other-news/index.md) (2016-10-11): Serduno: a news channel aggregator, recorder and remixer I built as an ffmpeg playground. 15+ live channels, a week of backlog, 3x3 matrix view.
- [WebGL Traffic Analyzer](https://t.kolsto.no/blog/webgl-traffic-analyzer/index.md) (2014-11-09): A weekend WebGL globe for the ops centre video wall, mixing IDS and firewall data into eye candy that only I could interpret.
- [Hello World!](https://t.kolsto.no/blog/hello-world/index.md) (2010-05-14): The obligatory first post, from 2010, written for the curious one who wonders where this all started. Includes a picture of my dog.