MDT on Facebook MDT on Twitter MDT on LinkedIn

for Smallworld™

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

Download Free TrialWant to Buy?


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.


Magik on Java™ Plug-in 0.6.1 is available!

2015-06-12 15:25

New version of Magik on Java™ Plug-in has been adapted to Smallworld™ 5 Preview Release - Phase 9. Debugger’s stack frames filtering and dynamics visibility in Variables View have been fixed.

MDT Magazine 2015 and White Paper 2015!

2015-06-09 12:30

MDT Magazine, Spring 2015

Check out the new issue of MDT Magazine, Spring 2015. Read more about the new Magik on Java™ plug-in, new MDT Magik debugger, find out more about Electric Office Web™, Network Viewer™, as well as Network Viewer Plus™ and read about the type of licences available for MDT Professional Edition.

MDT White Paper, Issue 2015

The new updated White Paper has been released. See the updated secions and screenshots for the present overview of MDT's tools and functionalities.

Click here or go to section Support/Documentation.

ASTEC at the GE Digital International Software Summit!

2015-06-08 09:39

We kindly invite you to visit our stand at the GE Digital International Software Summit which this year will take place in Frankfurt am Main. You can visit us from the 9th to the 11th of June at the stand no. 15 c. As every year the conference is dedicated to the newest IT solutions and involves i.a. numerous presentation, discussions, workshops and much more.

Visit our both and get a 20% discount for the purchased MDT license!

MDT 3.6 is now available!

2015-05-28 14:11

With a new version of MDT you can gain benefits from some major improvements:

  • Support for the new Magik on Java™ debugger, which is now available after installing the new version of Magik on Java™ plug-in
  • Support for #DEBUG statement
  • Added visualization of load list file structure

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


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

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