MinIO

https://github.com/minio/minio

MinIO is a High Performance Object Storage released under Apache License v2.0. It is API compatible with Amazon S3 cloud storage service. Use MinIO to build high performance infrastructure for machine learning, analytics and application data workloads.

SSH

https://github.com/gliderlabs/ssh

This Go package wraps the crypto/ssh package with a higher-level API for building SSH servers.

ws-tcp-relay

https://github.com/isobit/ws-tcp-relay

An extremely simple relay/bridge/proxy between WebSocket clients and TCP servers. Data received from WebSocket clients is simply forwarded to the specified TCP server, and vice-versa. In other words, it's websocketd, but for TCP connections instead of STDIN and STDOUT.