StudyPlannr.com is a web app that lets you create schedules for studying. It’s aimed at helping medical students plan their weekend studying. They key difference from other tools is that StudyPlannr automatically divides up the time give you give it among multiple subjects and allows you change weights to give each subject more or less time relative to the other subjects.
StudyPlannr is open source and licensed under GPL v3. The source code is available on GitHub
It’s developed using Google App Engine for Python.
StudyPlannr was previously named Medder Schedule.