ThinkWave
According to ThinkWave Inc., "ThinkWave provides teachers with comprehensive gradebook applications that automatically link to ThinkWave.com, a secure web site where parents and students can view real-time information about students' performance in class. ThinkWave provides teachers with two versions of the gradebook application: ThinkWave Educator, the software version, and ThinkWave Web Educator, the online version."
Experimentation with the ThinkWave system has ceased as ThinkWave Inc. has instituted a fee for use.