Open Source Eiffel Software

The Gobo Eiffel Project provides the Eiffel community with free and portable Eiffel tools and libraries.

EiffelStudio is an Integrated Development Environment (IDE) that provides comprehensive facilities to programmers. It offers a comprehensive suite of tools that enable programmers to produce correct, reliable, and maintainable software while keeping control of the development process. If you want to create fast, robust, scalable applications, then EiffelStudio™ will offer you a cost-effective solution. Imagine being able to model your system as you think – capturing your requirements and your thought processes with EiffelStudio. When ready to design, you build upon the model you just created, still with EiffelStudio. Then you implement with EiffelStudio. You never need to throw anything out and start over. You don’t need extra tools to go back and safely make changes in your architecture. Roundtrip engineering? It’s built in by design. Testing, metrics and productivity tools? They’re built in. EiffelStudio accommodates quickly and efficiently new thoughts and changes.

Reflexion games and utility software written with the Eiffel language for the Linux and Windows platform, libraries and tools to write those games. Jeux de réflexion et logiciels utilitaires écrits avec le langage eiffel pour les plates-formes windows e

FOX is an Extensible C++ Class Library for Multi-Platform GUI development. Platforms supported include Linux, Windows NT/9x/2K, and UNIX/X11 workstations (IRIX, Solaris, HP-UX, Tru64, AIX, FreeBSD, and others).

A chess game interface which returns the real time perplexity and entropy at turn intervals. Also provides probability and graphing over time.

Vtgrep stands for Visual Tree Grep and is a GUI to tgrep. It allows the user to build graphical representations of tree structures and then translates them into the tgrep syntax. provides search functionality, as well as search and result logging.

eXML is a XML Parser Framework for Eiffel. It features a native Eiffel parser and expat (using a C-bridge). Please note that we are using the mailing list at http://www.egroups.com/group/exml (and not the one on SF)

Tecomp: A compiler for Eiffel (compliant with ECMA-367, ISO/IEC 25436). Tecomp is a command line compiler. It is committed to implement standard Eiffel. Tecomp works on Unix and Windows systems. The tecomp project is no longer under active development. Successor project: http://albatross-lang.sourceforge.net

Free implementation of ELKS library

Multi-functional batch sequence aligner incorporating Needleman-Wunsch, Smith-Waterman and Oommen-Kashyap algorithms along with compound alignment of secondary sequences.

A clone of the well-known Bust-A-Move game, completely written in Eiffel.

This project provides access to the collective works of the Colorado Eiffel Users Group (CEUG). It is intended that this site help promote and further the Eiffel language through a variety of portable Open Source initiatives.

A calculator for programmers that does conversions between decimal, hex, octal, time, etc.

The canvas widget is a EiffelVision2 widget that supports zooming, panning, and animation of the displayed graphical objects.

Capture et rejoue des application Eiffel sous Windows

These are simple command line audio tools to examine, change the gain, and convert wave and raw audio files.

CompuCell3D is a software framework for multimodel simulations of biocomplexity problems. It has been developed as an ongoing project for the Interdisciplinary Center for the Study of Biocomplexity at the university of Notre Dame.

**** THIS LIBRARY WAS MOVED INTO Boost **** New location: https://github.com/boostorg/contract C++ Contract Programming (a.k.a. Design by Contract or DbC). All Eiffel features supported: subcontracting, postcondition old and result values, optional contract compilation, customizable action on assertion failure, block invariants, loop variants, etc. Plus virtual specifiers, concept checking, named parameters. See: http://contractpp.sourceforge.net

Design Pattern Wizard GUI - Design and implementation of the wizard (GUI and “business model”) in Eiffel

EDOM is a freely-available binding of the World-Wide-Web Consortium\'s Document Object Model, for the Eiffel programming language. It also supports parsing serializing, and validating (by W3C schemas and/or Schematron), and XSLT processing.

To develop a plug-in for eclipse (eclipse.org) allowing for seamless Eiffel Development using the SmartEiffel (smarteiffel.loria.fr) compiler and the ELJ (elj.com) tools.

ESE (reads "easy") stands for "Enterprise SmartEiffel". Its aim is to build enterprise-level tools and libraries for SmartEiffel (http://smarteiffel.loria.fr)

The Eclipe Eiffel Development Tools (EDT) are a set of plugins which eventually implement a full-fledged, highly integrated Eiffel development environment based on the Eclipse Platform. The EDT plugins contribute a number of facilities specific to Eiffel

"Eiffel Open Source" is a starting point for Eiffel programmers. It provides Eiffel related documents and points to other free Eiffel resources.

The Eiffel Windowing System is a small Eiffel library providing an SDL-based windowing system (and possibly other frontends in the future).