nomos is a modern, lightweight, and developer-first rule engine for Java and Spring Boot. It's designed to be the simple, transparent, and fast alternative for 95% of use cases where traditional rule engines (like Drools) are heavyweight and complex.

💡 Why nomos?

Traditional rule engines are powerful but often come with: A steep learning curve. Heavy memory footprints and slow startup times. Complex, proprietary UIs and XML-based configuration. A "black box" execution model that's hard to debug.

nomos is different. Our philosophy is developer-centric, simple, and transparent.

✅ Lightweight: A small, plain Java JAR with minimal dependencies.

✅ Simple DSL: Define rules in human-readable YAML files or a Fluent Java DSL.

✅ Spring-Native: A first-class Spring Boot starter for zero-effort autoconfiguration.

✅ Hot-Reloading: Rules are treated as configuration, not code. Reload them at runtime without restarting your service.

✅ Transparent: A "glass box" design with built-in tracing so you always know why a rule fired.