We have been running the network exclusively on the Go powered Hornet node since the summer of 2020. For Chrysalis, you will have the choice to continue using a new version of Hornet or our new Rust-based Bee node.
Moving forward, both Hornet and Bee are the officially supported nodes for IOTA.
Hornet is an EDF-supported community node written in Go and has already proven itself to be a stable and performant implementation. It recently underwent a successful audit.
Bee is an IOTA Node implemented by the Foundation and written in Rust.
At this stage, we recommend using Hornet since it has several optional features that are not implemented in Bee so far.