Information about digital picture taking/processing
My Tutorial on Understanding Exposure (Shutter speed, Aperture, etc)
(Tested with Firefox 3.6 and IE 8 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)
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)