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+---
+layout: post
+published: true
+author: hanez
+author_email: hanez@fun-lang.xyz
+author_url: https://hanez.org
+noToc: false
+title: What is Fun?
+description: Fun is a serious, focused programming language and VM aimed at professional environments — used for serial and smartcard communication and, potentially, TCP/Unix sockets.
+date: 2026-05-10
+categories:
+- project
+- language
+- vision
+tags:
+- fun
+- language
+- serial
+- smartcard
+- sockets
+- vm
+---
+
+Fun is a programming language and virtual machine I originally started for fun — but I take it seriously and build it for professional environments. It is not an esoteric language. The current focus areas are:
+
+- Serial communication
+- Smartcard communication
+- Potential TCP/Unix socket communication
+
+This post gives you a concise picture of what Fun is (and is not), why it exists, and where it is going.
+
+### What Fun is
+
+- A compact language with a small, pragmatic core
+- Backed by a lightweight VM designed for reliability
+- Geared toward IO-centric tasks where predictability matters
+- Built with maintainability in mind, aiming for clear semantics and straightforward tooling
+
+### What Fun is not
+
+- Not an esoteric toy — while the project began “for fun,” it has serious goals and standards
+- Not a kitchen-sink runtime — we prefer a focused, composable core over bloat
+
+### Primary use cases (today and near-term)
+
+- Talking to devices over serial interfaces (industrial/embedded scenarios)
+- Smartcard interactions where exact byte-level control is required
+- Explorations around TCP and Unix domain sockets for simple networked services
+
+### Design values
+
+- Focus: solve concrete communication problems well
+- Simplicity: keep concepts minimal and understandable
+- Reliability: deterministic behavior over clever shortcuts
+- Portability: aim to run in constrained and varied environments
+
+### Project status
+
+Fun is evolving quickly. Some components are production-ready, others are still experimental. The direction is clear: practical features that make day-to-day, low-level communication tasks easier and safer.
+
+### Get involved
+
+- [Browse features](/features/)
+- [Read the documentation](/documentation/)
+- Try examples from the repository and site
+- Send feedback and ideas — they directly shape priorities
+
+If you work with serial devices, smartcards, or lightweight networked tools and want a focused, no-nonsense environment, Fun might fit you well. It started as a project for fun — and it stays fun — but the goals are serious.
+
+— Johannes Findeisen (hanez) · hanez@fun-lang.xyz