Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
SABnzbd - SABnzbd is a free/open-source cross-platform binary newsreader written in Python.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
NZBGet - The most efficient usenet downloader.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
NZBGet.com - Fast, reliable, and feature-packed NZB downloader.