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unrealircd

UnrealIRCd is an open source IRC server that has powered thousands of networks since 1999, commanding 37% market share as the most widely deployed IRCd. Built with modularity and security at its core, it provides a highly configurable platform for real-time communication networks across Linux, macOS, and Windows environments.

Key Features

• IRCv3 Support & Security: Full IRCv3 compliance with SSL/TLS encryption and advanced cloaking mechanisms
• Anti-Abuse Systems: Built-in anti-flood and anti-spam protection with GeoIP capabilities
• Advanced Configuration: Highly customizable configuration files with JSON-RPC support and remote includes
• Cross-Platform Compatibility: Runs on all major Unix systems, macOS, and Windows with consistent functionality

Use Cases

• Community Networks: Deploy private IRC networks for gaming communities, development teams, or interest groups
• Enterprise Communication: Establish secure internal communication infrastructure with fine-grained access controls
• Legacy System Integration: Maintain compatibility with existing IRC-based workflows and client ecosystems

Who Is It For

UnrealIRCd is ideal for network administrators, DevOps teams, and organizations seeking a production-ready, feature-rich IRC server with extensive documentation and active community support. It's particularly suited for those requiring modularity, security features, and long-term stability in their communication infrastructure.