OpenLexicon is an open-source business rules and process management tool that rapidly develops applications for transaction and process-based applications. OpenLexicon is known for providing high performance solutions and has been used in a number of enterprise-level applications. You can read about these here . You can use either product separately or in concert. There are two main components of OpenLexicon: the metadata repository and the business rules engine. Major components of OpenLexicon are released as open source software under the OpenLexicon OpenSource License. A good overview of the business rules approach is available here .OpenLexicon has a Wizard that is a web-form based collaborative tool for building business rules and business use cases. For a brief overview of the wizard, look at this link . We have designed the Wizard for non-developers and analysts with light technical skills. It features a richer experience for the users on the web, traditionally only offered by thick-client UIs.  The collaboration team assembles groups of business rules into a business use case and published in a metadata file or the database. OpenLexicon provides solid support for web services. You can read about the OpenLexicon WSDL here . There is also an eclipse plug-in for web services here . You create complex application behavior with OpenLexicon’s process management. OpenLexicon can build an application reads data from a file, performs reference data lookups, validates the entire object, and then stores it in a database table. You can read about this here . Plus, you can build the application in the Wizard while writing no code! OpenLexicon also supports web services. A simple architecture diagram for OpenLexicon is included here .