Textual is the world's most popular application for interacting with Internet Relay Chat (IRC) chatrooms on macOS. Textual protects your privacy by leveraging widely accepted, proven technologies such as Off-the-Record Messaging (OTR) to ensure that the only people reading your conversations are those that you intend to.
Textual also includes.
• Address Book for tracking when friends are online & offline
• Auto-completion for nicknames, commands, and channels
• Bold, color, italic, and underline text formatting
• Built in support for converting text emoticons to emojis
• Growl and native Notification Center support
• Inline media embedding (Show images inline with chat)
• Inline nickname colorization
• Per-channel notification controls
• Powerful, customizable, rule-based ignore matching
• Powerful filters that can perform commands in response to input
• Powerful ZNC integration for power users
• Quick navigation using fuzzy searching
• Rich array of keyboard shortcuts
• SOCKS4, SOCKS5, and HTTP proxy support (with or without SSL)
• Simple Authentication and Security Layer (SASL)
• Support for sending self-signed certificates for authentication
• Support for validating and specifying trust for untrusted certificates
• Viewing multiple channels at the same time
.and much, much more!

Supported Operation Systems:
macOS 10.9 or later