Open Source
Security you can read, audit and run yourself. Every jSentinel project ships under the EUPL 1.2, is mutation-tested, and carries a CycloneDX SBOM — built and maintained independently in the EU.
EUPL 1.2
Mutation-tested
CycloneDX SBOM
🇪🇺 EU-maintained
More projects coming
Start here
jSentinel for Java
Framework-neutral security core with Vaadin, REST & Standalone adapters. Authentication, authorization, audit, brute-force, session policy, multi-tenancy, method security, Policy API. Java 26.
Why jSentinel?
How it compares to Spring Security, an external IdP, and rolling your own — and where it fits.
Documentation
Quick start, integration guides, architecture, API reference (Javadoc).
Sponsor
Back the project so the next features ship faster. The core stays EUPL 1.2.
More projects are on the way. Want commercial guarantees around the open
source? See Support & Maintenance.