The Company

Symnum is a software development tools company founded by Jon Beltran de Heredia.

Its products have been offered since 2005 under the name NGEDIT Software (which is now being phased out).

Software development today is a pain. Symnum's goal is to turn it into something reasonable, and hopefully even enjoyable. ViEmu and Codekana are tiny first steps, but there's more to come down the road.

Symnum is based in Vitoria-Gasteiz, in the Basque country, north of Spain; incorporated as Symnum Systems S.L.U., with CIF (VAT number) B-01459783.


Just write to this email contact address for anything (questions, support, sales, inquiries, etc...)

The name

The name comes from the symbolic and the numeric.

The numeric is what exists. Curiously, we can't see it.

On the other hand, there is what we see, the symbolic. But even more curiously, it doesn't exist!

The name is for the fascinating things that happen at the border between both, which is surprisingly close to the essence of computation.

It's a weird world indeed.


The most popular Symnum product: vi/vim emulators for Microsoft Visual Studio 2002-2008 (VS2010 version coming), for SQL Server Management Studio and for Word & Outlook.

Since 2005, thousands of developers rely on ViEmu to make their daily development work more productive and enjoyable. Dozens of releases, hundreds of features, and great integration into all the different host applications. The next expected version is ViEmu for VS2010.

Check this article if you want to know what vi/vim editing is and why many smart developers live by it. has all the the details.


We spend much more time reading code than writing it, so it's only sensible to improve code visualization as much as possible.

Codekana was first released in 2007. It is compatible with VS 2002-2008, and a new version for VS2010 is in the works. The new MEF-based editor in VS2010 will allow great new features that will make Codekana 2010 much more powerful.

Check for all the details.


Kodumi is a work-in-progress text-editor that is designed from a unique new angle into computing. It's still some time away from release, but it will hopefully provide a fresh new alternative to established text editors. There are many yet-unexplored avenues in computing and information processing, and they hold great potential for productivity.

Just send an email to this address if you want to be notified when 1.0 is released.

The old name

It all started in 2005 with the goal of creating a next generation text editor, which was called NGEDIT. It seemed only reasonable to call the company NGEDIT Software.

ViEmu and Codekana were both born as offspring of the text-editor effort. Kodumi was chosen as a name that better reflected the essence of NGEDIT-the-editor.

The NGEDIT Software company name made no more sense, so Symnum was chosen instead.

The old site still has a lot of information, so you might be interested in checking it out.

© 2005-2010 Symnum Systems SLU (formerly NGEDIT Software)