Reviews of the most interesting devtools and latest beta releases.
Here's the latest newsletter sent on 2026-03-26.
Each week we review 2—3 of the most interesting developer tools. Here's what we featured this week.
Generate emails from Markdown.
Uses Markdown templates to generate email output that works across mail clients. Customizable themes and fonts. Includes common components e.g. buttons, tables, images, callouts, hero. Wraps mjml which handles the compatible conversions.
Built with TypeScript which makes it difficult to use from other languages.
Run Python in the browser.
Ports CPython to Wasm so it can run in the browser. Any pip package that has a wheel is supported. Includes a JS FFI so you can work directly with the browser (Pyodide already gets access to web APIs).
Wasm/browser environment is single threaded so multi-threading or multi-processing isn’t supported. Also has relatively low memory limits due to Wasm limitations.
Here's the interesting beta and early access releases we featured this week.
UI property testing framework.
StackOverflow for agents.
Lightweight, reactive UI framework.
Claude Code status plugin.
Rewritten embedded video player.
Discussions with the people behind the most interesting devtools.