externum

Externum is one language for three targets:

- readable Python-style code with real, enforced type declarations
- inline Bash for system control (`cmd` and %% bash blocks %%)
- compiles to a standalone .exbc bytecode artifact — runs without source

The compiler is written in Externum itself (minimal Python bootstrap).

- struct / enum / trait / impl (Rust-flavored), match-case, defer
- $"…" string interpolation, pipeline operator x |> f(a, b)
- compiles to Python, to real Bash (set -euo pipefail) and to the EXBC VM
- TUI IDE, REPL, browser playground, built-in DRM/licensing stack
- NEW in 4.3: externum translate — import existing Python (AST) and Rust code

400+ unit/integration/differential tests in CI.

Install: pip install externum
License: MIT.

Features

Strict typing with enforced declarations
Compiles to Python, Bash and EXBC bytecode
Self-hosted compiler
TUI IDE + REPL + browser playground
Python & Rust code import (new in 4.3)
Built-in DRM/licensing stack

Project Samples

Project Activity

See All Activity >

License

MIT License

Follow externum

externum Web Site

Other Useful Business Software

Our Free Plans just got better! | Auth0

With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.

Try free now

Rate This Project

User Reviews

Be the first to post a review of externum!

Additional Project Details

User Interface

Console/Terminal

Registered

2026-09-23

Similar Business Software

Java

The Java™ Programming Language is a general-purpose, concurrent, strongly typed, class-based object-oriented language. It is normally compiled to the bytecode instruction set and binary format defined in the Java Virtual Machine Specification. In the Java programming language, all source code is...

See Software
OCaml

OCaml is a general-purpose, industrial-strength programming language with an emphasis on expressiveness and safety. OCaml’s powerful type system means more bugs are caught at compile time, and large, complex codebases are easier to maintain. This makes it a good language for running critical...

See Software
Cython

Cython is an optimizing static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself. Cython gives you the combined power of Python and C to let you write Python code that...

See Software
V Programming Language

Simple, fast, safe, and compiled. For developing maintainable software. Simple language for building maintainable programs. You can learn the entire language by going through the documentation over a weekend, and in most cases, there's only one way to do something. This results in simple,...

See Software
Component Pascal

Component Pascal is a general-purpose language in the tradition of Pascal, Modula-2, and Oberon. Its most important features are block structure, modularity, separate compilation, static typing with strong type checking (also across module boundaries), type extension with methods, dynamic...

See Software
Apache Groovy

Apache Groovy is a powerful, optionally typed and dynamic language, with static-typing and static compilation capabilities, for the Java platform aimed at improving developer productivity thanks to a concise, familiar and easy to learn syntax. It integrates smoothly with any Java program, and...

See Software