Environmental Design Solutions Limited (EDSL) was formed in 1989 to commercially develop Tas Software. EDSL sells Tas software and consultancy services using Tas. EDSL believe that the mixing of development, consultancy and software support leads to a focused software product, with quality support available to end users.

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Tas Keys

You will require a valid key to be able to use Tas.

Tas 9.x

Keys for the current generation of Tas are available from this page. Ensure your dongle is plugged in and functioning correctly before proceeding.

Demo Keys

To take advantage of your free trial of Tas, use this page to generate your keys.

Tas 8.5 Keys

Users of older versions of Tas may use this page to update their keys.