OpenZiti

OpenZiti is an open-source, programmable zero trust networking platform for connecting applications using an identity-based overlay network instead of IP-based trust. It provides a fabric (mesh), edge components, and SDKs/tunnelers to securely connect users, devices, and services with policy-driven access.

Key Features

• Identity-based connectivity with certificate-backed identities and policy-based authorization
• Application segmentation and “deny by default” access controls for services
• Overlay mesh fabric with smart routing and pluggable capabilities
• “Dark” services and routers that can operate without inbound listening ports by using outbound connections into the fabric
• End-to-end encryption options, including application-embedded connectivity via SDKs
• REST management APIs and a web-based admin console for managing the network
• Support for integrating existing apps through tunnelers and proxies when embedding SDKs is not feasible

Use Cases

• Zero trust access to internal applications across hybrid and multi-cloud environments
• Secure machine-to-machine or service-to-service communications without exposing ports
• Replacing or reducing traditional VPN access with per-application access policies

Limitations and Considerations

• Some advanced capabilities (for example, true process-to-process protection) are best achieved when applications embed the OpenZiti SDKs rather than relying only on tunnelers
• Designing policies, identity lifecycle, and PKI can add operational complexity compared to simple IP allowlists

OpenZiti is well-suited for teams that want a flexible, open-source foundation for zero trust application access. It combines a scalable overlay fabric with strong identity controls and multiple integration options, ranging from SDK embedding to tunneling and proxying.