The SeaMonkey project is a community effort to develop an all-in-one Internet application suite. It contains an Internet browser, email and newsgroup client with an included Web feed reader, HTML editor, IRC chat, and Web development tools, and is sure to appeal to advanced users, Web developers, and corporate users. It uses much of the Mozilla source code powering such successful siblings as Firefox, Thunderbird, Camino, Sunbird, and Miro.
SABnzbd is a cross-platform binary newsreader written in Python. It simplifies the process of downloading from Usenet dramatically, thanks to its friendly Web-based user interface and advanced built-in post-processing options that automatically verify, repair, extract, and clean up posts downloaded from Usenet. It also has a fully customizable user interface, and offers a complete API for third-party applications to hook into.