OpenL Tablets - Business Rules Management Made Simple
Empower your business users to manage complex rules in Excel. Deploy them as enterprise-grade services. No coding required.
Get Started in 2 Minutes | Read the Docs | Download
What is OpenL Tablets?
OpenL Tablets is an open-source Business Rules Management System (BRMS) that lets business analysts create, test, and manage decision logic using familiar Excel spreadsheets - then automatically deploys them as high-performance REST APIs.
Perfect for:
- Insurance companies calculating premiums and underwriting policies
- Banks processing loan applications and credit decisions
- Healthcare organizations managing treatment protocols and benefits
- Retailers running dynamic pricing and promotions
Why Choose OpenL Tablets?
💼 Business Users Love It
- Use Excel - No programming skills needed. Write rules in spreadsheets you already know.
- Instant Testing - Test your rules with real data before deployment
- Full Control - Business users own and update rules without developer bottlenecks
- AI-Assisted - Integrate with AI tools like Claude and ChatGPT via MCP protocol
👨💻 Developers Love It
- REST APIs - Rules deploy as production-ready REST services automatically
- Type Safety - Compile-time validation prevents errors before production
- Performance - Excel rules compile to native Java bytecode for maximum speed
- Any Platform - Java, Python, JavaScript, .NET - integrate from anywhere
🏢 Enterprises Love It
- Battle-Tested - Proven in production at Fortune 500 companies
- Scalable - Handles millions of decisions per day
- Compliant - Built-in versioning, audit trails, and governance
- Flexible Deployment - Cloud, on-premises, containerized, or embedded
How It Works
Rules in Excel → OpenL Tablets → Production REST API
-
User writes decision logic in Excel
- Decision tables, spreadsheet calculations, scorecards
- Test with sample data right in the interface
-
OpenL Tablets validates and compiles
- Type checking catches errors immediately
- Generates optimized Java bytecode
- Versions and creates audit trail
-
Deploy as REST Service
- One-click deployment to production
- Auto-generated OpenAPI documentation
- Hot reload for zero-downtime updates
Quick Start
Try It Now with Docker
Get OpenL Tablets running in 60 seconds:
# Download and start
docker compose up
# Open your browser
http://localhost:8080
That's it! You now have:
- ✅ OpenL Studio - Web-based rule editor
- ✅ Rule Services - REST API engine
- ✅ Sample Rules - Pre-loaded examples
Key Features
📊 Excel-Based Authoring
Write rules in familiar Excel format. Decision tables, scorecards, calculations - all in spreadsheets.
🔒 Type-Safe Validation
Strong typing catches errors before deployment. No more runtime surprises.
🚀 One-Click Deployment
Deploy rules as REST APIs with a single click. Auto-generated OpenAPI documentation.
📈 Version Control
Built-in Git integration. Track every change, rollback instantly, collaborate with teams.
🧪 Comprehensive Testing
Test individual rules or entire scenarios. Debug with trace and breakpoints.
⚡ High Performance
Excel rules compile to native Java bytecode. Process millions of decisions per second.
🔄 Hot Reload
Update rules in production with zero downtime. Changes go live instantly.
🌐 Multi-Language Support
Call from Java, Python, JavaScript, C#, Go, or any language via REST.
Industry Solutions
Insurance
- Premium calculation and rating
- Underwriting decision automation
- Policy eligibility determination
- Claims processing and fraud detection
Banking & Finance
- Credit scoring and loan origination
- Risk assessment and pricing
- Fraud detection and AML screening
- Regulatory compliance rules
Healthcare
- Treatment protocol management
- Insurance eligibility verification
- Benefits calculation
- Clinical decision support
Retail & E-Commerce
- Dynamic pricing engines
- Promotion and discount rules
- Inventory optimization
- Personalized product recommendations
Documentation
📚 For Business Users
- Getting Started Guide - Install and configure OpenL Tablets
- Excel Rule Reference - Complete guide to writing rules in Excel
- WebStudio User Guide - Using the web interface
- Testing Guide - Test your rules thoroughly
🔌 For Developers
- REST API Guide - Integrate rules into your applications
- Deployment Guide - Deploy to Docker, Kubernetes, AWS, Azure, GCP
- Architecture Overview - System design and components
- Troubleshooting - Common issues and solutions
💻 For Contributors
- Contributing Guide - Help improve OpenL Tablets
- Developer Setup - Set up your dev environment
- Architecture Details - Deep technical documentation
Community & Support
Get Help
- 💬 GitHub Discussions - Ask questions, share ideas
- 🐛 Issue Tracker - Report bugs, request features
- 📖 Documentation - Comprehensive guides and references
- 🌐 Official Website - Tutorials, blog, resources
Stay Connected
- ⭐ Star this repo to show your support
- 👀 Watch for updates and new releases
- 📢 Share your success stories with the community
Download & Install
Pre-Built Releases
Download production-ready packages:
- Latest Release - Stable version
- All Releases - Version history
Docker Images
# OpenL Studio (Rule Editor)
docker pull openltablets/webstudio:latest
# OpenL Rule Service (Production Runtime)
docker pull openltablets/ws:latest
Contributing
We welcome contributions! OpenL Tablets is built by a global community of developers and business analysts.
Ways to contribute:
- 🐛 Report bugs and suggest features
- 📝 Improve documentation
- 💻 Submit code and documentation improvements
Read Contributing Guidelines →
License
OpenL Tablets is open source under the GNU Lesser General Public License (LGPL).
Commercial support and consulting available through our partners.
Quick Links
| Resource | Link |
|---|---|
| 🚀 Quick Start | Getting Started Guide |
| 📖 Documentation | Complete Docs |
| 🐳 Docker Hub | Container Images |
| 💬 Community | GitHub Discussions |
| 🐛 Issues | Bug Reports |
| 🌐 Website | openl-tablets.org |
| 📦 Downloads | Releases |
Transform your business rules from spreadsheets to APIs in minutes.
Made with ❤️ by the OpenL Tablets community