ICU Studio — A fast, lightweight IDE for ICU MessageFormat

[shaadcode]

Hi everyone 👋

I've been working with ICU MessageFormat for a while and always found it painful to write complex plural, select, and nested messages by hand — especially when you're dealing with syntax errors and can't easily preview the output.

So I built ICU Studio, a fast and lightweight desktop IDE for ICU messages. I thought it might be useful for others in this community who work with i18n formats.

Given that Next-intl natively supports ICU messages, this software can further accelerate your development process.

What it does:

🧩 Ready-made snippets — Insert plural, select, date, time, number, and more with a single click.

👁️ Live preview — See the rendered output as you type, with test variables for any message type.

📋 Multiple copy formats — Copy as JSON property, single-line, raw text, formatted, or a ready-to-use next-intl function call.

✅ Smart validation — Instantly tells you if a message is valid or broken, and why.

🎨 Syntax highlighting — Color-coded structure for better readability.

↩️ Undo / Redo — Zero friction when experimenting.

⚡ Fast & lightweight — Snappy startup, no bloat.

It's open source and free to use:
🔗 GitHub: https://github.com/shaadcode/ICU-Studio
📚 Docs: https://shaadcode.github.io/icu-studio-docs/

I'd love to hear your feedback — especially if you work with ICU messages in your projects. Happy to answer any questions!

Thanks for reading 🙏