libpcap is a system-independent interface for user-level packet capture. libpcap provides a portable framework for low-level network monitoring. Applications include network statistics collection, security monitoring, network debugging, etc.
Libnet is a cross-platform library aimed at game developers. It has an abstract high level API, which encourages developers to make their games portable across platforms and network types
SnackAmp is a powerful multi-platform audio music (mp3, ogg ,wav, streams ...) player and organizer for large music collections. Manage your entire collection, including ID3 tagging and auto-playlisting. Integrated web server for remote control/streaming
BonkEnc is a CD ripper and audio encoder for various formats. It can produce MP3, Ogg Vorbis, BONK, AAC and VQF files. BonkEnc supports freedb (CDDB), CD-Text and ID3 tags and is available is several languages
