Classic Code Editor

A production-quality IDE with a 90s soul — Borland C++, Visual C++ 6.0 and Delphi, rebuilt with Flutter for macOS 12+.

Download for macOS (.dmg) Source code

Highlights

Four authentic retro themes — Visual C++ 6.0, Borland Delphi, Visual Basic 6.0 and Turbo Pascal 7.0, with 2px raised borders and zero rounded corners.
Multi-language editor — Dart, Python, C, C++ and ARM64 Assembly (.s), with syntax highlighting and completion.
Real LSP integration — live diagnostics, hover and autocomplete from the actual language server.
Real debuggers — Dart VM Service, Python sys.settrace, C/C++ and ARM64 Assembly via clang + lldb, with breakpoints, variable inspection and instruction-level stepping.
Integrated terminal and console — with a debug-output bridge.
Offline test suite — 204 passing tests, no language server or compiler spawned during tests.

Screenshots

Delphi theme: the debugger with variables and call stack

Turbo Pascal 7.0 — ARM64 Assembly

The fourth theme, shown driving the ARM64 Assembly support: highlighting, Run, and the LLDB debugger with its register window.

Turbo Pascal theme: the editor showing an ARM64 assembly file

Turbo Pascal theme: the debugger panel while debugging assembly

Turbo Pascal theme: the integrated terminal running an assembly program

Requirements & install

macOS 12+ (Monterey or later), Apple Silicon or Intel.
To run and debug code: dart, python3, clang and lldb on your PATH (Xcode Command Line Tools cover the last two).

Download the DMG, open it and drag Classic Code Editor.app to Applications.

First launch: the app is not notarized, so macOS blocks it. Click Done, then open System Settings → Privacy & Security and choose Open Anyway.

Build from source

git clone https://github.com/moradzadeh67/classic-code-editor.git
cd classic-code-editor
flutter pub get
flutter run -d macos

The full release gate lives in scripts/release_gate/ (analyze → test → build → smoke → DMG).

Privacy in one line

Everything happens on your machine: no accounts, no telemetry, no backend. Code you press Run on is executed locally, with your own privileges. See docs/PRIVACY.md.