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Strongly-typed omega-order programming language

'GNU epsilon' is a purely-functional strongly-typed omega-order language, moving towards Lisp in that it allows dynamic management of source code at runtime. It is oriented to ease of development and readability. The static scoping rule and the type checkings at compile-time should make the language "safe".

Its features include:

  • static scoping
  • first-class functions
  • Hindley-Milner type system with type inference
  • modules
  • synonym, concrete and abstract types, with polymorphism
  • a scanner generator
  • a purely functional I/O system, inspired by Haskell
  • can generate C code, Scheme code, and bytecode for a virual machine

The package currently includes a compiler, interpreter, runtime system, and garbage collector. Planned or not yet finished: parser generator, classes, an extensive library, optimizer, partial evaluator, pretty-printer, an Emacs mode, parellel implementation for SMPs and clusters, interoperability with other languages via CORBA.


User manual included and available from http://www.gnu.org/software/epsilon/manual/index.html

Heckert gnu.small.png This is a GNU package:epsilon


Download version NO_VERSION_DATA (developmental)
released on 9 December 2015

VCS Checkout



LicenseVerified byVerified onNotes
GPLv2orlaterJanet Casey mangeurdenuage18 June 2003

Leaders and contributors

Luca Saiu Maintainer

Resources and communication

AudienceResource typeURI
Mailing listMailing Listhttps://lists.gnu.org/mailman/listinfo/epsilon-devel
DeveloperVCS Repository Webviewhttp://savannah.gnu.org/cvs/?group=epsilon
Bug TrackingE-mailmailto:bug-epsilon@gnu.org

Software prerequisites

This entry (in part or in whole) was last reviewed on 9 December 2016.


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The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.