Simon Willison's blog offers a mix of technical tutorials, data analysis projects, and reflections on technology and society. With a focus on Python, SQL, and web development, Simon shares insights into building web applications, working with data, and exploring emerging technologies. Developers can learn about data visualization, API design, and software engineering best practices, gaining inspiration and practical knowledge to advance their careers.

Simon Willison

Simon Willison shares his experience using Claude Code to vibe-code two macOS SwiftUI apps — Bandwidther (network bandwidth monitor) and Gpuer (GPU/RAM monitor) — without knowing Swift or opening Xcode. He walks through the minimal prompts used to build each app, highlights Claude's ability to suggest features and design menu bar apps, and honestly notes the apps shouldn't be fully trusted since he can't verify the accuracy of the metrics they report. Key takeaways: SwiftUI apps can be built in a single file, terminal commands are easy to wrap in a UI, and Claude has solid SwiftUI design taste.

Vibe coding SwiftUI apps is a lot of fun