Information about digital picture taking/processing
My Tutorial on Understanding Exposure (Shutter speed, Aperture, etc)
(Tested with Firefox 3.0 and IE 7 with Sun Java 1.6 Plugin.)
Sphere Raytracing
Mandelbrot Explorer
Photo Album Generator
US / Metric conversion
Tools for Software Engineers
SQL Client
Web Log Analyzer
Load Tester
HTTP Test
By other people:
Eclipse (Java-based IDE)
Apache Software Foundation (many great things)
Ant (Java-based build tool)
POI (Java library to read/write MS Excel spreadsheets)
JUnit (Unit Testing framework)
MiGLayout (Java Layout Manager)
HTML Validator Plugin for Firefox
XHTML Validation Servlet Filter
PuTTY (ssh client)
Core FTP (FTP and SFTP client)
SQuirrel (Java based SQL client)