Tools / Commands for monitoring Memory Usage in ubuntu / Debian
free - Display amount of free and used memory in the system.
watch -n 5 free -m - Real time memory usge

A few days ago, I have reviewed Firefox 3.1 Beta 3. It's quite lovely. It boasts improved Javascript performance, it comes with new usability and privacy features, it supports future HTML multimedia elements ... But nowhere in that article did I mention the memory usage. For a good reason.

The Webalizer is a fast, free web server log file analysis program. It produces highly detailed, easily configurable usage reports in HTML format, for viewing with a standard web browser.

To keep your system in optimum shape, you need to be able to monitor it closely. [...] In this chapter, we look at some of the basic monitoring tools, along with some tactics designed to keep your system up longer. Some of the monitoring tools cover network connectivity, memory, and hard drive usage, but all should find a place in your sysadmin toolkit.

The third point update to the 5.x branch of the multi-platform partitioning tool features a number of updated packages, improved memory usage and drops support for the GRUB4DOS ISO

This tutorial will explain 3 Hard disk usage and availability report tools available in ubuntu

The Binary Analysis Tool allows developers to audit and analyse their code to search for GPL violations or other potential legal issues

Ruckus has released the Zap source code under a modified BSD license to provide the tool to the world, and hopefully spur development of this and other related analysis tools. Zap measures performance, statistically, to provide insight into the true nature of how a network can perform.

Recently I have been checking out the memory usage of various window managers and desktop environments, concluding with a study of KDE.