Bright Dyes Dye Tracing Products
Bright Dyes - Easy to see and easy to use EPA and NSF certified tracing dyes. TRACER DYE, WATER TRACING DYE, DYE TRACING, DYE, DYE TRACERS, TRACING DYE, TRACING DYES, LEAK DETECTION DYE, SEPTIC DYE, SEWER DYE, TOILET LEAK.
http://www.brightdyes.com

Ray tracing in Wikipedia
A overview non technical article on ray tracing also covering some history of the subject.
http://en.wikipedia.org/wiki/Ray_tracing

Ray Tracing News Guide
Lots of information on ray tracing. Updated once or twice a year.
http://www.acm.org/tog/resources/RTNews/html/

Ray Tracing News
An infrequent newsletter on ray tracing and general computer-graphics research and resources.
http://www.acm.org/tog/resources/RTNews/html/

Ray Tracing Bibliography
Over 700 bibliographic references and some 300 abstracts from ray tracing related papers and books. Not updated since 1999 but much of the information is still useful.
http://www.acm.org/tog/resources/bib/

Software Tools for C++
Software tools for C++, C, Delphi and Visual Basic. Code Coverage, Flow Tracing, Memory Leak Detection, Performance Profiling, Deadlock Detection.
http://www.softwareverify.com/productsCpp.html

ACM Crossroads: Ray Tracing
Article on Ray Tracing in the student magazine of the ACM.
http://www.acm.org/crossroads/xrds3-4/raytracing.html

The Art of Error Correcting Coding
Error Control Coding,Error CorrectingCoding,Error Correcting Codes,FEC,Turbo Codes,Iterative Decoding,DigitalCommunications,Wireless,Satellite,Data,Coded Modulation,Golay,Hamming,BCH,Reed Solomon,Viterbi Decoder,Soft Decision Decoding,Sudan Algorithm,Unequal Error Protection,Variable Rate Coding,Adaptive Coding,Convolutional Codes,LDPC,Low-Density Parity-Check Codes,The Art of Error-Correcting Coding,Capacity-achieving codes,Coding is not dead, is more alive than ever
http://the-art-of-ecc.com/

ActiveError Foundation
Every function or procedure is treated like a transaction, just like in SQL Server or Access. Through this feature, Foundation can "reexecute" your code, restor-ing it in exactly the state it was in before the error occurred. Foundation lets you handle errors exactly to your specifications - skip error handling entirely, or get the full-blown Active Error Handling treatment.
http://www.cirkadia.com/ActiveErrorProductOverview.html

Chuck's Ray Tracing Software
Personal page with links to programs for modeling, Ray tracing, converting, and animating. Plus models for various ray tracers. Windows, MacOS and Unix.
http://chuckr.bravepages.com/raytrac3.htm