Ergo (formerly known as Oragono) is a modern IRC server written in Go. Its core design principles are:

Being simple to set up and use Combining the features of an ircd, a services framework, and a bouncer (integrated account management, history storage, and bouncer functionality) Bleeding-edge IRCv3 support, suitable for use as an IRCv3 reference implementation High customizability via a rehashable (i.e., reloadable at runtime) YAML config

Ergo is a fork of the Ergonomadic IRC daemon. Features:

integrated services: NickServ for user accounts, ChanServ for channel registration, and HostServ for vanity hosts bouncer-like features: storing and replaying history, allowing multiple clients to use the same nickname native TLS/SSL support, including support for client certificates IRCv3 support yaml configuration updating server config and TLS certificates on-the-fly (rehashing) SASL authentication LDAP support supports multiple languages (you can also set a default language for your network) optional support for UTF-8 nick and channel names with RFC 8265 (PRECIS) advanced security and privacy features (support for requiring SASL for all logins, cloaking IPs, and running as a Tor hidden service) an extensible privilege system for IRC operators ident lookups for usernames automated client connection limits passwords stored with bcrypt UBAN, a unified ban system that can target IPs, networks, masks, and registered accounts (KLINE and DLINE are also supported) a focus on developing with specifications