Useful patterns for building HTML tools

I’ve started using the term HTML tools to refer to HTML applications that I’ve been building which combine HTML, JavaScript, and CSS in a single file ...

Serving 200 million requests per day with a cgi-bin

Jake Gold tests how well 90s-era CGI works today, using a Go + SQLite CGI program running on a 16-thread AMD 3700X. Using CGI on modest hardware, it’s...

AI and engineering tools - simonwillison.net

The tools on tools.simonwillison.net were mostly built using AI-assisted programming. This page lists 106 tools and their development history.

How to Secure Environment Variables for LLMs, MCPs, and AI Tools Using 1Password or Doppler

Stop hardcoding API keys in MCP configs and AI tool settings. Learn how to use 1Password CLI or Doppler to inject secrets just-in-time for Claude, Cur...

Adding a GitHub Contribution Graph to Next.js

How to add a GitHub contribution graph to your Next.js site using GitHub's GraphQL API, with server-side caching.

repo-tokens-calculator

CLI token counter (Python + tiktoken + uv) with pretty summary

williamcallahan.com

Interactive personal site with beautiful terminal/code components & other dynamic content

Book Finder (findmybook.net)

Book search and recommendation engine with OpenAI integration

WeLoveNoCode

Platform connecting businesses with no-code developers and tools.

Rownd

Customer identity and data privacy platform for businesses.

User Interviews

Platform connecting companies with participants for user research and customer feedback studies.