Build custom Skills to teach Claude specialized tasks. Create once, use everywhere—from spreadsheets to coding. Available across Claude.ai, API, and Code.

Kubernetes Egress Control with Squid proxy (interlaye.red)

Customize the web to work exactly how you want

On September 14, 2015, our first publicly-trusted certificate went live. We were proud that we had issued a certificate that a significant majority of clients could accept, and had done it using automated software. Of course, in retrospect this was just the first of billions of certificates. Today, Let’s Encrypt is the largest certificate authority in the world in terms of certificates issued, the ACME protocol we helped create and standardize is integrated throughout the server ecosystem, and we’ve become a household name among system administrators. We’re closing in on protecting one billion web sites.

The Oxbridge-educated boffin is feted as the codebreaking genius who helped Britain win the war. But should a little-known Post Office engineer named Tommy Flowers be seen as the real father of computing?

Introducing phase8, an eight-voice acoustic synthesizer that merges the sonic richness of the physical world with precise electronic control. With envelope shaping, sequencing, analogue wavefolding, and pitch-dependent modulation, phase8 harnesses the latest Acoustic Synthesis technology developed at KORG.

A running ledger of history’s end-of-the-world predictions.

For reasons I can’t fully explain, people’s failure to return their carts bothers me more than it probably should. But then I realized I can do something about it.

Penpot: The open-source design tool for design and code collaboration - penpot/penpot

After nearly 50 years in space, NASA’s Voyager 1 is about to hit a historic milestone. By November 15, 2026, it will be 16.1 billion miles (25.9 billion km)

We are thrilled to announce Zensical, our next-gen static site generator that addresses and overcomes the technical limitations of MkDocs

Building robust helm charts

Browser automation via CLI — for humans and agents - cosinusalpha/webctl

Humans are no longer necessary. So we’re getting rid of them.

Country borders don't return JSON, they return judgment. So I built a state machine for travel when governments won't expose your state.

ty is an extremely fast Python type checker and language server, written in Rust, and designed as an alternative to mypy, Pyright, and Pylance.

Notion AI is susceptible to data exfiltration via indirect prompt injection due to a vulnerability in which AI document edits are saved before user approval.

Join the Be Like Clippy movement to make technology more user-friendly and transparent. Including a list of custom clippy profile pictures