upper.io/db - upper db is a data abstraction layer for Go apps that is compatible with SQL and NoSQL databases.
hyperfox & arpfox - Hyperfox is a MITM tool that can fake SSL certs on the fly (the user must provide a root cert and key). arpfox is a cli replacement for arpspoof, a security tool that can be used to perform ARP spoofing attacks.
fnlang - fn is a functional programming language (still in design phase)