Digital products

Tools I built because I needed them.

Every product started on a real project. Pay once, use forever — no subscriptions.

Course 200 000 so'm

The Engineer’s Writing Kit

A four-week course on writing essays without sounding like a marketing email.

  • Eight lessons + four assignments
  • Private cohort feedback
  • Lifetime access to updates
Details Enroll
SaaS 25 000 so'm / mo

tinyq Pro

Hosted version of my open-source task queue. For people who do not want to operate a database.

  • Free tier: 100k jobs / mo
  • Drop-in replacement for OSS tinyq
  • Email + Slack alerting
Details Start free
eBook 50 000 so'm

A Small Book on Caching

The post that started this site, expanded into 90 pages of patterns, traps, and code.

  • PDF + EPUB
  • 24 worked examples in TypeScript
  • Pay-what-you-can option
Details Buy the book