Allegro CL 9.0

Allegro CL is the most powerful dynamic object-oriented development system available today, and is especially suited to enterprise-wide, complex application development.

Powered by Common Lisp, Allegro CL's true dynamic object technology allows developers to generate leading-edge, mission-critical applications that are robust, extensible, and easy to evolve and deploy. Version 7 features AllegroCache, a new Persistent CLOS Object Database, featuring: Dynamic Schema Evolution, ACID Transactions, Native Lisp Btrees, XML data archive, Store billions of objects, and Simple, Intuitive Interface.
What's new in this version:
Source Stepper, code coverage tool, faster and more.