Guardian Project is a research and development effort powered by
technology-focused activists, concerned citizen users, and open-source
security software hackers. We build tools based on real-world
experience and feedback. Our process is transparent, inclusive and
and source code for building your own service like ostel.co is available.
We encourage anyone with Linux system skills to host their own backend to
become part of a global federated secure VoIP network.
Open Secure Telephone Network (OSTN)
We are working to define a defacto standard called OSTN by which a
voice over internet protocol service can be considered
end-to-end secured, with verifiable encryption, minimal logging,
and a decentralised model of deployment and use. From this
standard, we will work to deploy a network of compliant
server/service instances and client software, mobile and
desktop, that are federated, audited and interoperable.