Securing the Digital World, Together. Openly.

1. True Open Source, No Compromises

We believe cybersecurity must be built on trust, and trust begins with transparency. All projects under the FOSS 4 Security umbrella are genuinely open source:

No traps, no hidden strings. Just clean, auditable, modifiable code.

2. Free Community Editions for All

Security is a fundamental right, not a luxury. That's why all FOSS 4 Security tools provide fully functional community editions — without essential features gating, time bombs, or paywalls.

You can test, learn, and secure — without needing a credit card or approval from procurement.

3. A Cohesive Ecosystem, Not a Logo Farm

We don't do "just a list."

FOSS 4 Security tools are designed to work together — through shared APIs, integration standards, or bridges — making it easy to combine threat detection, risk analysis, workload protection, policy enforcement, compliance automation, and more.

Our goal: a modular, interoperable cybersecurity stack, where tools collaborate instead of coexist.

4. Driven by Community, Guided by Purpose

We are builders, defenders, and tinkerers — united by a mission to make digital life safer for all.

Our community shares not just code, but knowledge, ideas, and responsibility.

From solo devs to global teams, everyone has a voice in shaping the future of open security.

5. Open Security as a business enabler

In a time of increasing digital threats, silos and secrets don't help.

We believe in collaborative defense, where transparency, community, and openness are our strongest shields.

Once you are ready, you can support the initiative by considering the paid/pro plan of the solutions.