OpenLisp, ISLISP, ISO Lisp

The price for OpenLisp depends on usage (price are in € and VAT is not included:

It's free for non-commercial usage and if you don't ask me for support. I may even ignore your mail.
It will cost you 20 € to be a register user. You will have a one year limited (mail only) support for installation and questions about OpenLisp features. Bugs may be fixed (or not).
It will cost you 50 € to be a supported user. You will have a one year (mail only) support for installation, questions about OpenLisp features. Bugs will be fixed on next major release (generally each 3 or 4 month).
It will cost you 150 € each year to become a "first class user". For that price, you'll have mail support, quick response to bug report (I hope with fix), intermediate releases, email notification for new versions.
It will cost you 6000 € for OpenLisp non-GPL source code that allows you to bind Lisp code inside a C/C++ application or to use OpenLisp as part of a commercial application. You'll have access to the source code, support for both OpenLisp and its source code, quick bug fix. Runtime licences depend if user have access or not to the OpenLisp interpreter. This price is for a single platform. A platform is defined by the following 3 components: processor architecture, operating system and compiler. Linux x86 and x86_64 are for example two different platforms.
It will cost you 6000 € if you use OpenLisp in an enterprise server solution (i.e. Knowledge Management server, AI agent, Smart indexer,...) You will have access to the source, support for both OpenLisp and its source code, quick bug fix. Runtime licenses depend on the number of users. Ask for details.
It will cost you 1000 € / day for specific development or ports to a new machine, OS or compiler.

If you have a specific project that does not match this list, feel free to contact me mailto: jullien@eligis.com or by phone +33 (0) 1.34.27.60.09 to see how we can make a reasonable deal (like a small percentage of your revenue). In some cases, academic projects may have access to the source code for free. Ask me for more details.