Gopacket is a clean Go implementation of Impacket, a library intended for working with network protocols.

A subset of Go that translates to C

Open-Source Network Management, ITOM, and Security Analytics platform

Host your own BrightData like service 10x less expensive

Self-hostable instant messaging server compatible with classic AIM and ICQ clients written in golang. (Independently developed, not affiliated with or endorsed by AOL)

excrypto offers specialized versions of the Go crypto, TLS, x509, and SSH packages designed for security research.

SSHamble: Unexpected Exposures in SSH

SSH-MITM - ssh audits made simple

Pure Go implementation of jq

Flamingo captures credentials sprayed across the network by various IT and security products.

Nmap Project's Windows packet capture and transmission library

Recog-Go: Pattern Recognition using Rapid7 Recog