Tech Founder Stack
Mathias KlenkLessons from 2x technical founder & CTO on startups, engineering, and the hard realities of taking tech products from 0 to 1.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 28 | Founded | a year ago | Last Issue | 18 days ago |
| Active | |||||
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techfounderstack.comLatest Issues
The age of personalized software has begun
Every few months someone declares the end of software. And every few months I see more software being built than the month before. The real change is in who is building it.
In the last year I’ve watched three people in my life become softw...
Your Moat Is Dead. Anyone Can Rebuild Your Product.
Castle with a moat
Last week, a small team published an open-source reimplementation of Photoshop written in pure Rust. Within a week it had several thousand GitHub stars, sibling projects cloning Premiere, Lightroom, InDesign and Word, an...
Coding Got Solved. So What Do Engineers Do Now?
At the companies furthest along, the majority of code merged into production is no longer written by a human. Anthropic has said Claude authors more than 80% of its merged code, with people reviewing and approving. Google and Microsoft have...
Why I Built Holo (AI Context Layer) and Open-Sourced It
I just recently open-sourced Holo. It’s a self-hostable shared context layer for AI agents, and it’s the kind of project I would have loved to find six months ago.
This article is partly the story of why I built it, partly the engineering...
Everyone is a builder now
This article was published on November 23rd, 2025 on Design + AI(Link). I’m resharing it since it got so popular and it’s worth reading for every engineer. I wrote it together with Felix Haas.
Something different is happening in software...
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Authors
The writers behind this newsletter.
2x technical founder. I write about the hard realities of taking tech products from 0 to 1. Made all the mistakes so you don't have to.
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