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for Smallworld™

MDT® is an IDE for development
of Smallworld applications.
It’s the fastest and smartest way
to deliver your Smallworld
solutions since 2009.

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Magik code editing

code assist, templates, hyperlinks, validation

Integrated debugger

breakpoints, inspections, stepping through code

Fast and effective development

managing GIS sessions, console, code assist, command history

Multiplatform ability

working with Magik, Java, HTML, XML in one environment

Video Tutorials

A set of short Migration FAQ tutorials to help you in faster and more comfortable transfer from Emacs to MDT.

All crucial aspects are explained so you can easily migrate your sessions, sources and configurations.


MDT PE 4.0.2 and SW5 Support Plug-in 1.4.0 are now available!

2020-08-26 13:54

The newest version of MDT PE fixes a couple of major and minor bugs. We strongly recommend to update your MDT. You can find more details on the List of changes page.

The newest version of MDT SW5 Support Plug-in substantially improves the SW5 Debugger, e.g. debugging loops, including nested loops and opening missing external Magik sources is fully supported now. You can read more about this version on the What's new page. For more detailed info refer to the List of changes.

MDT Professional Edition 4.0.1 is now available!

2019-07-19 11:15

The newest version of MDT PE fixes a substantial number of bugs and improves references and declarations search functionalities. For more detailed info refer to the List of changes.

MDT SW5 Support Plug-in 1.3.0 released!

2019-07-19 11:00

This release includes a few major changes:

• Supports Smallworld 5.2
• Smallworld 5 Debugger now shows shared constants and shared variables.
• Added support for new _while and _class keywords

Read more about this version and its features in What's new page. For more detailed info refer to the List of changes.

MDT Professional Edition 4.0 is now available!

2019-03-19 11:15

We’re thrilled to announce the release of MDT Professional Edition 4.0! This version introduces refactoring to Magik code development. We’re very proud of this achievement and will continue working on it in the foreseeable future.

Here's what's new:

  • Magik code refactoring actions
  • Improved Magik source editor hyperlink mechanism now supports opening the declaration of any declarable piece of Magik code
  • New search actions which allow searching Magik element declarations and their references
  • Magik Search feature has been extended to include references search
  • Compatibility with Eclipse 4.8 (Photon)

Read more about this version and its features in What's new pages. For more detailed info refer to the List of changes.

As always, please send us feedback about this new version, tell us what you like and what you’d like to see next:


Logo Geomagic

MDT gives us a powerful, modern IDE and all the comforts and efficiencies that come along with it, as for example the very powerful debugger, seamless Subversion and GIT integration, and very efficient file search and code analysis. With MDT, we have everything we need in one place.

Dr. Hannes MoserDr. Hannes Moser
Head of GIS and Quality Management
GEOMAGIC GmbH, Germany

Logo Sydney Trains

MDT has proven to be a very efficient development environment for the GE Smallworld applications.

The multitude of tools available in MDT, both Smallworld specific and Eclipse plug-ins, results in a single IDE that covers all aspects of Smallworld application development and support. I have been using MDT since it was first released and find it to be the most comprehensive development environment currently available for GE Smallworld products.

Glenn WarnockGlenn Warnock
Technical Specialist GIS
Sydney Trains, Canada

GE Logo

GE is pleased to see third party applications such as MDT that enable customers to customize applications on Smallworld. We will continue to closely support companies like ASTEC in support of our position as a leading provider of geospatial solutions.

Martin Ansell
General Manager Smallworld
GE Energy

Logo NIS Solutions

MDT brings a modern environment to Magik development. The most effective aspect is the enormous increase in efficiency and productivity.

Jan Kiefer
Software Developer
NIS AG, Switzerland

MDT Magazine Issue 7

Magazine for Smallworld™ Magik Developers

  • Get ready to meet Magik on Java™ with the release of MDT PE 3.6
  • Further support for Magik on Java™ provided by MDT: debugger
  • We have expertise in Electric Office Web™!
  • Network Viewer™ and Network Viewer Plus™
  • Types of licenses available for MDT Professional Edition


MDT Newsletter

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