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Software · Development

LazFuck

LazFuck is a code editor, available on Linux: debugging and syntax highlighting.

  • Completely free
  • Linux
  • Open source

Overview

LazFuck is a code editor, available on Linux.

Features described in its Flathub listing and on its official website: debugging and syntax highlighting.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “LazFuck is a GUI application for writing, executing, compiling and debugging programs written in famous BrainFuck esoteric programming language.” — Flathub, 10 November 2026
  • “Graphical code editor with color syntax highlighting” — Flathub, 10 November 2026
  • “Graphical code editor with color syntax highlighting” — Flathub, 10 November 2026

At a glance

All of LazFuck is free: no feature is locked behind a paid plan, and its code is open.

It is in the public domain (CC0-1.0): no reuse conditions.

Strengths

  • Open source code
  • Commercial use allowed

About

LazFuck is a GUI application for writing, executing, compiling and debugging programs written in famous BrainFuck esoteric programming language. Features: Graphical code editor with color syntax highlighting Optimizing compiler and interpreter Cross-compilation to Delphi, Free Pascal, Python, Java, C, C#, PHP, Rust and Javascript Interpreter with debugger

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Official plan pages (pricing, licence, terms) (commercial use) —
  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 8 November 2026
  • Description from Flathub — AppStream (Flathub)

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