- Home
- Business Rules Management Software
- OpenL Tablets
OpenL Tablets
What it is
OpenL Tablets is an open-source business rules engine and decision management system that represents executable application logic in Excel tables. It supports Excel formats starting with Excel 97 and tables for decisions, lookups, spreadsheet calculations, decision trees, and algorithms. OpenL Studio is a web-based environment for editing and managing rules, with guided wizards, inline cell editing, and type-safe checks that link errors to affected cells. Rule Services can execute rules as REST services, Kafka consumers or producers, or providers for Java interfaces. Rules can also be used in Maven projects and interoperate with Java classes and methods. The repository uses Git, databases, and blob storage, with versioning, metadata, WebDAV access, and role-based access controls. Analysis tools include tracing, explanations, unit tests, benchmarks, what-if analysis, and checks for gaps or overlaps. Rules can have effective and expiration dates, with deployment management, staging, consistency checks, and live updates. The downloadable demo bundle includes examples and tutorials, but operates in single-user mode with a local Git repository. The product and its parts use the GNU Lesser General Public License.
For and against
For
- Excel tables can represent executable business rules.
- Supports five rule table types.
- Includes rule testing, tracing, and analysis tools.
- Offers REST, Kafka, and Java integration paths.
Against
- The downloadable demo is limited to single-user mode.
- The listed supported environments specify Java 21.
- The product and its parts use the GNU Lesser General Public License.
The verdict
OpenL Tablets combines Excel-based rule authoring with web editing, testing, repositories, and deployment features. The downloadable demo’s single-user limit matters when evaluating it for shared use.
Who it suits
It is intended for teams that want business people to author rules for applications to execute and consume. Its Java, Maven, REST, and Kafka options may be relevant to teams building rules into application workflows.
On the record
- Demo limitation
- The downloadable demo runs in single-user mode and includes a local Git repository with example projects and tutorials.openl-tablets.org · read 4 Oct 2026
- Distribution
- The downloads page offers a demo bundle of OpenL Studio and RuleServices, Docker Hub images, source code, and Maven Central artifacts.openl-tablets.org · read 4 Oct 2026
- Download limit
- The downloadable demo bundle runs in single-user mode and includes a local Git repository with example projects and tutorials.openl-tablets.org · read 4 Oct 2026
- Editing and validation
- The web editor includes guided wizards and inline cell editing, while type-safe checks report errors with links to the affected cells.openl-tablets.org · read 4 Oct 2026
- Excel-based rules
- It treats tables in Excel files as application logic and supports Excel formats starting with Excel 97.openl-tablets.org · read 4 Oct 2026
- How it works
- It uses structured tables in Excel files to represent executable business rules.openl-tablets.org · read 4 Oct 2026
- Integrations
- The product describes Maven and Java integration, Java wrappers, and exposing rules as services; Rule Services can execute rules through REST and Kafka.openl-tablets.org · read 4 Oct 2026
- Java and Maven integration
- Rules can be used in Maven-based projects and interoperate with Java classes and methods.openl-tablets.org · read 4 Oct 2026
- License
- The product and its parts are licensed under the GNU Lesser General Public License.openl-tablets.org · read 4 Oct 2026
- Product
- OpenL Tablets is an open-source business rules engine and decision management system.openl-tablets.org · read 4 Oct 2026
- Purpose
- OpenL Tablets is an open-source business rules engine and decision management system.openl-tablets.org · read 4 Oct 2026
- Repositories
- The Rules Repository uses Git, databases, and blob storage, and the feature page describes WebDAV access and fine-grained role-based access control.openl-tablets.org · read 4 Oct 2026
- Repository
- The rules repository uses Git, databases, and blob storage, and supports versions, metadata, and WebDAV access.openl-tablets.org · read 4 Oct 2026
- Rule authoring
- Users can create decision, lookup, spreadsheet calculation, decision tree, and algorithm tables.openl-tablets.org · read 4 Oct 2026
- Rule formats
- It supports decision, lookup, spreadsheet calculation, decision tree, and algorithm or flow tables.openl-tablets.org · read 4 Oct 2026
- Rule services
- Rule Services can execute rules as RESTful services, Kafka consumers or producers, and providers for Java interfaces.openl-tablets.org · read 4 Oct 2026
- Security
- Role-based access control provides fine-grained policies for access to rules assets and operations on them.openl-tablets.org · read 4 Oct 2026
- Studio
- OpenL Studio is a web-based environment for editing and managing rules.openl-tablets.org · read 4 Oct 2026
