Enterprise Network Packet Analyzer Development

I require a network packet analyzer tailored for a large enterprise environment. This tool should incorporate features such as a URL/website blocker and an email data filter. The software must be compatible with both Windows and Linux platforms, providing both real-time and offline analysis capabilities.

Key Features:
- Designed for a large enterprise network
- URL/Website blocker functionality
- Email data filter
- Real-time and offline analysis capabilities

Ideal Skills and Experience:
- Proficient in Windows and Linux compatibility
- Previous experience in developing network packet analyzers
- Familiarity with real-time monitoring and filtering software
- Understanding of enterprise network requirements