LispWorks Launches Version 5.1 of its Advanced Lisp Programming Environment

Cambridge, England, 27 March 2008

LispWorks Ltd is pleased to announce the release of LispWorks 5.1 on Windows®, Macintosh®, Linux®, FreeBSD®, SPARC/Solaris and HP-UX platforms.

LispWorks 5.1 brings these new features:

Not all features are supported for every LispWorks product and platform. Please see the feature table for details.

LispWorks 5.1 Professional and Enterprise Editions continue to offer excellent value with no runtime license fees. An annual maintenance package is available.

More details of the improvements in this release can be found in the Release Notes.


Pricing information for LispWorks 5.1 is here.

Owners of current LispWorks maintenance contracts are entitled to free upgrades to LispWorks 5.1. We will contact you by email with your upgrade information. If you are entitled to the upgrade and do not receive our email today, please tell us at .

Maintenance simplified

Your Professional and Enterprise Edition maintenance contracts will now cover all releases made during the period of the contract. There will be no fee for major version upgrades, such as LispWorks 5.1 to LispWorks 6.0, provided that you keep your maintenance contracts current.


To order LispWorks 5.1 go here.

Evaluation Licenses

If you would like to evaluate LispWorks 5.1 prior to a possible purchase, just ask us at . We will need to know:

  • your LispWorks development platforms.
  • which platforms you are targeting for application delivery.
  • whether you need 32-bit LispWorks or 64-bit LispWorks.
We would also be interested to learn what you are planning to use LispWorks for.

LispWorks 5.1 Personal Edition

LispWorks 5.1 Personal Edition will be released later this year.

Contact LispWorks Ltd

For product information, maintenance and support renewals and sales contact LispWorks Ltd at:

For technical support contact LispWorks Ltd at:

Contact Information

LispWorks Ltd: Dave Fox +44 1223 421861

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