GNU epsilon logo

GNU epsilon

by Free Software Foundation
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ActiveAvailable globallyOn-premise
Quick facts
VendorFree Software Foundation
Year launchedN/A
StatusActive
Location51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA
Countries servedGlobal
Languages1
Integrations4+
Free tierN/A
Free trialN/A
Contact salesN/A
Last reviewed: Jun 2026

About GNU epsilon

GNU epsilon is an extensible programming language designed for symbolic computation. It features a small kernel language and supports the creation of user-defined personalities for experimentation and innovation.

GNU epsilon is an experimental, extensible programming language project maintained by the Free Software Foundation. It is designed around a minimal 'ε₀' kernel, allowing developers to build specialized 'personalities' for different programming tasks, with a primary focus on symbolic computation. The project provides a comprehensive infrastructure including an interpreter, virtual machine, and both bytecode and native compilers. While the language is currently in an experimental phase and not yet recommended for general public use, it represents a significant effort in language design, emphasizing user-defined syntax and control structures. The implementation includes advanced features like a parallel garbage collector for multicore systems. As an official GNU package, it is released under the GPLv3, and development is currently following a cathedral model as the maintainer refines the core architecture.

Pros & Cons

Pros
  • Highly extensible architecture allows for the creation of custom language personalities.
  • Includes advanced runtime features like a parallel garbage collector for multicore systems.
  • Provides a complete toolchain including an interpreter and native compiler.
  • Released under the GNU GPLv3, ensuring software freedom for all users.
Cons
  • The current implementation is heavily experimental and not yet suitable for general public use.
  • Development follows a cathedral model, limiting community contribution opportunities at this stage.
  • Documentation and tooling are still in early development compared to mature GNU packages.

Features

Key features

Symbolic Computation

Provides a powerful predefined personality specifically suited for symbolic mathematical and logical operations.

Extensible Kernel

Built upon a minimal ε₀ kernel that allows users to define complex personalities and control structures.

Multi-Target Implementation

Includes an interpreter, virtual machine, bytecode compiler, and native compiler for flexible execution.

Parallel Garbage Collection

Features a runtime system with a parallel garbage collector optimized for multicore machine architectures.

Syntax Abstraction

Enables rewriting complex programs into simple, analyzable forms through user-supplied specifications.

Additional features

Bytecode Compilation

Supports efficient execution through a dedicated bytecode compiler.

Native Compilation

Offers native compilation capabilities for performance-critical applications.

Experimental Bootstrapping

Currently bootstrapped from Guile with automatically-translated ML code.

Extensible Syntax

Allows users to direct syntax, control flow, and optimization strategies.

Multicore Support

Runtime system is designed to leverage multicore hardware via parallel garbage collection.

Pricing

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Countries & Languages

Global
Countries served
1
Interface languages
10
Billing currencies

Interface languages

English

Billing currencies

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