ntop is a network monitoring tool that collects real-time traffic statistics: bandwidth, protocols, and the sources and destinations of traffic.

Create an efficient GUI for rTorrent! Integration with ruTorrent and Nginx (SCGI, SSL, htpasswd) on Debian. Compilation and configuration step by step.

Ncdu is an interactive console (ncurses) disk usage analyzer. A fast alternative to the du command! Monitor and navigate directories.

See how easy it is to install the vnStat PHP frontend. Read data transfer statistics from vnStat on a web server with PHP and GD. Step-by-step configuration!

vnStat is a lightweight, console-based bandwidth monitor (rx/tx) for Linux. Hourly, daily, and monthly statistics without a database. See how to install it.

Run ShellinABox, emulating a terminal in the browser. See how to configure Nginx as a reverse proxy, add SSL (HTTPS), and password protection (htpasswd)!

Jnettop is a small network traffic analyzer (http, ssh, dns). Monitor bandwidth usage, filter connections, and find the host using the most bandwidth!

Dnstop is a sniffer that monitors DNS traffic in real time. Check source and destination IPs, record types, and domain levels on your network!

Hddtemp is a tool for reading hard disk temperatures (S.M.A.R.T.). Run it as a daemon, check the database, and integrate it with netcat or telnet!

Learn to use screen: run a program (e.g. wget) as a daemon, log out, and it keeps running. Detach and resume sessions with Ctrl+a d and screen -r.