Back the project that
secures your app.
Sentinel for Java is developed in the open by one engineer alongside client work. Sponsorship is what keeps the lights on for new features, security hardening, and timely releases.
Four concrete things your sponsorship buys.
Not a black box. Sponsorship pays for the work that's already on the roadmap and the steady-state maintenance that keeps the library production-grade.
Security hardening
Brute-force, session, and audit policies are live. Cluster-aware backends, persistent audit, and admin UI are next on the roadmap — sponsorship moves them sooner.
Faster issue turnaround
Bug reports and CVE-class issues get triaged in days, not weeks. Sponsors get priority on the queue.
Compatibility maintenance
Keeping the reference demos and adapters green against new Vaadin and JDK releases. Less glamorous than features, more important than them.
Outreach
Documentation, blog posts, and conference talks that bring more contributors in. A bigger ecosystem benefits everyone running the library.
GitHub Sponsors — one click, any tier.
- Thank-you in the README
- Direct line for feedback & feature requests
- That "I made open source possible today" feeling
Tiered corporate sponsorship.
Tiers aren't priced publicly — the right number depends on your company size and how much involvement makes sense. Pick a tier as a starting point and we'll talk.
- Logo & link in the README
- Logo & link on this site
- Acknowledgement in release notes
- Everything in Bronze
- Quarterly office-hours call
- Priority issue triage
- Early heads-up on breaking changes
- Everything in Silver
- Named contact channel
- Roadmap input
- Guaranteed monthly response window
One short email.
Tell me which tier looks right and a sentence about your company. I'll reply with payment options (invoice, bank transfer, Open Collective Europe), tier details, and a sponsor agreement template.
contact@sven-ruppert.comUsually a reply within two business days.
Sponsoring is — and isn't.
- Gratitude — your name in the README and on this site.
- Roadmap influence — your priorities feed into mine.
- A direct line for feedback and feature requests.
- Steady-state maintenance for everyone.
- An SLA-backed support contract. Consulting is for that.
- A way to influence the open-source license — it stays EUPL 1.2.
- Exclusive access to features. Everything ships to everyone.
- A fix-this-bug-for-me transaction.
Thanks.
To everyone who has filed an issue, sent a PR, or quietly run the library in production — the project exists because of you.