This application is written in Go and uses the Go standard library for HTTP handling, JSON file storage, hashing, HMAC signing, and time handling.
External Go modules currently listed in go.mod are github.com/gorilla/sessions v1.2.1 and github.com/gorilla/securecookie v1.1.1. They are used for cookie-backed session management and secure cookie encoding.
Both Gorilla modules use the BSD 3-Clause license.