PRTG - Paessler Router Traffic Grapher 

An easy to use Windows solution for network/bandwidth usage monitoring. The software supports SNMP, packet sniffing and netflow to generate live readings and trend data to optimize the efficiency of routers, servers and other network components.
snmp packet sniffer packet sniffing netflow cisco router firewall mrtg bandwidth usage ip volume prtg traffic

Performance Pinging 

Performance Pinging, a tool for testing availability, response times and performance using ICMP. Writes data to a text file for later interpretation with e.g. Excel.
performance pinging icmp. availability response times performance

Advanced Graph and Chart Collection for PHP 

The PHP graphing scripts provide a very easy way to embed dynamically generated graphs and charts into PHP applications and HTML web pages.Very easy to use and add professional quality graphing to web pages / applications in minutes. Try for free.
php scripts script php scripts php script php pie graph chart graph and chart graphing charting

Crystal FLOW for C 

Crystal FLOW is extremely valuable for familiarizing with or reviewing C/C++ source code. It provides: Flowcharts from Source Code, Autoformatting for easy readability, Project-Overview, Browsing and Navigation. Export flowcharts to Visio
flowchart programming c c++ format beautify autoformat call trees editor ide browse browser ooad object

PHP 2D/3D Pie Chart 

This PHP script provides a very easy way to embed dynamic pie charts to PHP apps and web pages. Very easy to use and it's perfectly possible to add professional quality real time graphing to web pages & apps within minutes. Try for free.
php scripts script php scripts php script php pie graph php pie chart php graphing graphing software graphing pie

PCSummarizer 2005 

Shows a summary of critical system information right on your screen! Information that is shown is customizable. Display can be on top of other windows, or not.
system summary cpu usage memory available hard drive space osd