Are Tetrate Products Open Source?
Yes. Tetrate products are built on top of open source Istio, Envoy, Zipkin and Apache Skywalking. Tetrate Service Bridge (TSB) and Tetrate Service Express (TSE) are proprietary management planes on top of best-of-breed open source components. Our team includes founders and core maintainers of Istio, Envoy, Zipkin and Apache SkyWalking. We are the creators of Istio and maintainers for Envoy.
Tetrate Istio Distro (TID) is the 100% upstream open source distribution maintained by Tetrate and Tetrate Istio Subscription (TIS) offers enterprise support, FIPS-verified builds with certificate for operating Istio in environments with additional security concerns such as FedRAMP.