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Jd Licensing

Jd is Copyright 2018 by Jsoftware Inc. All Rights Reserved.

Jd is provided "AS IS" without warranty or liability of any kind.

Jd should only be used under a Jd key that is appropriate to the use.

Non-commercial use is free. This encourages use and will help build the talent pool of J programmers familiar with Jd. Their active participation in the J forums will provide depth and experience in Jd support.

License fees are in USD.

Send questions to jsoftware.com, address jdinfo.


You are encouraged to join the J database forum.

Support is free through J forums and stackoverflow. Separate support agreements with Jsofware, other companies, and individual consultants are available.

Key Overview

Non-commercial key is automatically installed when Jd is first run.

Commercial use, other than for evaluation, must be under a commercial key.

Commercial Key:

  • can be installed on any number of machines
  • is owned by one person - ownership can be passed or loaned to another person
  • is valid forever for Jd versions earlier than (date-issued + update-months)
  • can be renewed before updates run out at the same price and conditions

You must have a Professional key to do development used by others.

Commercial Key Types and Prices

Individual - $600 - paypal

  • updates for 12 months
  • for use only by key owner

Professional - $3000 - paypal

  • updates for 12 months
  • apps and direct use by anyone
  • for development only by key owner

Enterprise - $12,000/year

  • any number of developers
  • no use restrictions
  • inquire for details


Click BUY when you are ready to purchase the commercial key appropriate for you.

Keeping It Simple

Jsoftware provides no Jd License paperwork or boilerplate. If you require more formality, we'll consider anything you provide.