The Appesto Blog
Notes on the modern web stack
Engineering deep-dives, tech essays, and field reports from the team building Appesto. New posts every few weeks.
Introducing ReQuill: one-click AI text rewriting in any Windows app
Select text anywhere - Word, Chrome, Outlook, Slack - press a hotkey, and it's rewritten in place by the AI provider of your choice. The v1.0.0 pre-release is out now, and we want your feedback.
Edge runtimes in 2026: where serverless is actually going
Cold starts are dead, V8 isolates won, and Node-on-the-edge is finally boring. A field report from shipping production workloads on Workers, Deno Deploy, and Vercel Edge.
React 19 server functions: the good, the weird, the type-safe
Server functions blur the client/server line. We unpack the mental model, where TanStack Start nails it, and the foot-guns to avoid in real apps.
Migrating a 200-component design system to Tailwind v4
Native CSS variables, the new @theme directive, and what we learned tearing out tailwind.config.js for good.
Five product patterns we copied from AI-native apps
Streaming UI, optimistic tool calls, and graceful degradation when the model is wrong. Patterns worth stealing even if your app isn't AI-first.
Postgres RLS without the foot-guns
Row-level security is the cheapest authorization layer you'll ever ship - if you avoid the four mistakes that quietly leak data.
Why we moved every color to OKLCH
Perceptually uniform color, predictable dark mode, and gradients that don't go grey in the middle. A practical migration guide.
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