iftop - iftop does for network usage what top(1) does for CPU usage.
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
vnStat - vnStat is a console-based network traffic monitor for Linux and BSD that keeps a log of network...
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
nload - Monitor network traffic and bandwidth usage in real time
Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.